Hydrogen iodide

127.91

127.912285

233-109-9

694C0EFT9Q

1326

1787|2197

DTXSID2044349

Colorless gas; fumes in moist air

28111990

0

2.49

Hydriodic acid appears as a colorless to yellow liquid with a pungent odor. Consists of a solution of hydrogen iodide in water. Fumes irritate the eyes and mucous membranes. Corrosive to metals and to tissue.

1.7 g/cm³

-51 °C

-35.5 °C

126-127°C

1.466 (16ºC)

Solubility in water, g/100ml at 20°C: 0.03

Refrigerator (+4°C)

Vapour pressure, kPa at 25°C: 0.04

Relative vapour density (air = 1): 8.8

In case of H, the pore-forming agent is flammable; in case of cyanide, it produces toxic hydrogen cyanide gas; when heated, it decomposes toxic iodide gas

Acrid

Henry's Law constant = 2.5X10+9 mol/L atm (4.0X10-13 atm-cu m/mol)

SPECIFIC GRAVITY: 2.85 AT -4.7 °C (LIQUID)|Heat of fusion= 0.686|Heat of vaporization: 17.36 kJ/mol @ 25 °C /Hydrogen iodide gas/|Decomposes in light. Unstable at room temperatures and above, slowly decomposing to hydrogen and iodine. /Hydrogen iodide gas/|Dissolves metals, oxides, carbonates, and salts of the other weak, mono-oxidizing acids, causing the formation of iodides.

Soluble in water with release of heat.|Dissolves exothermically in water. The heat may raise toxic and corrosive acidic fumes. Fumes in air.

Acids, Strong Non-oxidizing

Known Catalytic Activity

HYDROIODIC ACID reacts exothermically with organic bases (amines, amides) and inorganic bases (oxides and hydroxides of metals). Reacts exothermically with carbonates (including limestone and building materials containing limestone) and hydrogen carbonates to generate carbon dioxide. Reacts with sulfides, carbides, borides, and phosphides to generate toxic or flammable gases. Reacts with many metals (including aluminum, zinc, calcium, magnesium, iron, tin and all of the alkali metals) to generate flammable hydrogen gas. Reacts violently with acetic anhydride, 2-aminoethanol, ammonium hydroxide, calcium phosphide, chlorosulfonic acid, 1,1-difluoroethylene, ethylenediamine, ethyleneimine, oleum, perchloric acid, b-propiolactone, propylene oxide, silver perchlorate/carbon tetrachloride mixture, sodium hydroxide, uranium(IV) phosphide, vinyl acetate, calcium carbide, rubidium carbide, cesium acetylide, rubidium acetylide, magnesium boride, mercury(II) sulfate [Lewis]. Mixtures with concentrated sulfuric acid can evolve toxic hydrogen iodide gas at a dangerous rate. Decomposes at high temperatures to emit toxic products. Reacts with fluorine, dinitrogen trioxide, nitrogen dioxide/dinitrogen tetraoxide, and fuming nitric acid.|HYDROGEN IODIDE, [ANHYDROUS] is a strongly acidic gas. Reacts rapidly and exothermically with bases. Reacts with active metals in the presence of moisture, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain alkenes. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and reducing agents. Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates, dithionites, and carbonates. Can catalyze chemical reactions among other materials. Decomposes at high temperatures to generate toxic products. Reacts with oxidizing agents to give iodine (when passed through fuming nitric acid, each bubble produces iodine attended by a flash of red flame [Berichte 3:3660]. Ignites in contact with fluorine, dinitrogen trioxide, nitrogen dioxide/dinitrogen tetraoxide.

The gas is heavier than air.

Critical temperature: 151.0 °C; critical pressure: 82.0 atm

II

8

UN 1787 8/PG 2

34-35

26-36/37/39-45-9

MW3760000

C

The warehouse is ventilated, low-temperature and dry; store it separately from cyanide, H pore-forming agent and alkali.

Stable. Incompatible with bases, amines. Corrodes steel. May discolour on exposure to air and light.

P261-P280-P305 + P351 + P338-P310

H314-H335

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.|Add slowly to a large amount of soda ash and slaked lime in solution with stirring. Flush resulting solution to a sewer.

REACTS WITH WATER OR STEAM TO PRODUCE TOXIC & CORROSIVE FUMES.|MAGNESIUM BURNS MOMENTARILY IN HYDROGEN IODIDE.|MOLTEN POTASSIUM CHLORATE IGNITES IN HYDROGEN IODIDE.|WHEN HYDROGEN IODIDE IS PASSED THROUGH FUMING NITRIC ACID, EACH BUBBLE PRODUCES A RED FLAME WITH SEPARATION OF IODIDE.|For more Hazardous Reactivities and Incompatibilities (Complete) data for HYDROGEN IODIDE (8 total), please visit the HSDB record page.

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: Some may burn but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. For UN1005: Anhydrous ammonia, at high concentrations in confined spaces, presents a flammability risk if a source of ignition is introduced. (ERG, 2016)|Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

|Danger|H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, and P501|H280 (45.08%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]|P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P321, P363, P403+P233, P405, P410+P403, and P501|Aggregated GHS information provided by 366 companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H280: Contains gas under pressure; may explode if heated [Warning Gases under pressure]|P260, P264, P270, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P307+P311, P310, P314, P321, P363, P405, P410+P403, and P501

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2197 datasheet. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: Fully encapsulating, vapor-protective clothing should be worn for spills and leaks with no fire. Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Isolate area until gas has dispersed. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. (ERG, 2016)|Wear protective gloves and clothing to prevent any reasonable probability of skin contact. Contact lenses should not be worn when working with this chemical. Wear splash-proof chemical goggles and face shield unless full face-piece respiratory protection is worn. Employees should wash immediately with soap when skin is wet or contaminated. Provide emergency showers and eyewash.

Ignites on contact with magnesium; perchloric acid; potassium + heat; potassium chlorate + heat; oxidants.

If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Do not apply water to point of leak in tank car or container. Apply water from as far a distance as possible. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors. /Hydrogen Iodide, anhyrous/|If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as spray and fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. /Hydriodic acid/

Evacuate and restrict persons not wearing protective equipment from area of spill or leak until cleanup is complete. Remove all ignition sources. Ventilate area of spill or leak. Neutralize with chemically basic substances such as sodium bicarbonate, soda ash, or slaked lime. Absorb liquids in vermiculite, dry sand, earth, peat, carbon, or a similar material and deposit in sealed containers. Keep this chemical out of confined spaces, such as a sewer, because of the possibility of an explosion, unless the sewer is designed to prevent the build up of explosive concentrations. It may be necessary to contain and dispose of this chemical as a hazardous waste. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Contact your Department of Environmental Protection or your regional office of the federal EPA for specific recommendations. If employees are required to clean-up spills, they must be properly trained and equipped. OSHA 1910.120(q) may be applicable.

SRP: When working with strong solutions of acids or bases or other caustic or corrosive materials, always wear a full face mask. When working with caustic or corrosive gases or vapors, a full face mask will not protect the eyes or prevent inhaling the material. A full face respirator is required.|SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emmissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.|SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.|If material not involved in fire: Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water to knock-down vapors. Do not use water on material itself. /Hydrogen iodide, anhydrous/|For more Preventive Measures (Complete) data for HYDROGEN IODIDE (7 total), please visit the HSDB record page.

If ... THERE IS NO FIRE, go directly to the Table of Initial Isolation and Protective Action Distances /(see table below)/ ... to obtain initial isolation and protective action distances. IF THERE IS A FIRE, or IF A FIRE IS INVOLVED, go directly to the appropriate guide /(see guide(s) below)/ and use the evacuation information shown under PUBLIC SAFETY. /Hydrogen iodide, anhydrous/|/GUIDE 125: GASES - CORROSIVE/ Health: TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution. /Hydrogen iodide, anhydrous/|/GUIDE 125: GASES - CORROSIVE/ Fire or Explosion: Some may burn, but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. /Hydrogen iodide, anhydrous/|/GUIDE 125: GASES - CORROSIVE/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basements, tanks). Keep out of low areas. Ventilate closed spaces before entering. /Hydrogen iodide, anhydrous/|For more DOT Emergency Guidelines (Complete) data for HYDROGEN IODIDE (17 total), please visit the HSDB record page.

Hydroidic acid solution requires a shipping label of: "Corrosive." It falls in DOT Hazard Class 8 and Packing Group II. Hydrogen iodide, anhydrous requires a shipping label of: "Nonflammable Gas, Corrosive." It falls in DOT Hazard Class 2.2. Passenger aircraft or railcar shipment is forbidden and cargo aircraft shipment is forbidden as well.|No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

The vapors of hydrogen iodide are severly irritating to the mucous membranes of the eyes and nose.

Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation.

Fireproof if in building. Separated from metals and oxidants. Keep in a well-ventilated room.

On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.

Rapid evaporation of the liquid may cause frostbite. The substance is corrosive to the eyes, skin and respiratory tract. Inhalation may cause severe swelling of the throat. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Medical observation is indicated.

AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!

Use ventilation, local exhaust or breathing protection.

Protective gloves. Cold-insulating gloves. Protective clothing.

Wear face shield or eye protection in combination with breathing protection.

(NOES Survey 1981-1983) has statistically estimated that 8,545 workers (2,191 of these are female) are potentially exposed to hydrogen iodide in the US(1).

FORMERLY USED FOR ITS EXPECTORANT ACTION IN CHRONIC BRONCHITIS & BRONCHIAL ASTHMA TO LIQUEFY THICK, TENACIOUS SPUTUM. /HYDRIODIC ACID, SYRUP/

USE OF IODIDES IS CONTRAINDICATED IN TUBERCULOSIS. /HYDRIODIC ACID SYRUP/

The iodide ion is excreted in part by the bronchial glands. ... /Hydriodic acid syrup/

... Believed to act reflexly by irritating the gastric mucosa, which in turn, stimulates resp tract secretion. /Hydriodic acid syrup/

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution. (ERG, 2016)|Corrosives

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)|Excerpt from ERG Guide 125 [Gases - Corrosive]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. In case of contact with Hydrogen fluoride, anhydrous (UN1052), flush with large amounts of water. For skin contact, if calcium gluconate gel is available, rinse 5 minutes, then apply gel. Otherwise, continue rinsing until medical treatment is available. For eyes, flush with water or a saline solution for 15 minutes. Keep victim calm and warm. Keep victim under observation. Effects of contact or inhalation may be delayed. (ERG, 2016)

Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.

Rinse skin with plenty of water or shower for at least 15 minutes. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention.

Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist respirations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. Activated charcoal is not effective. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Do not attempt to neutralize because of exothermic reaction. Cover skin burns with dry, sterile dressings after decontamination ... . /Inorganic acids and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation, at the first sign of upper airway obstruction, may be necessary. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's(LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Inorganic acids and related compounds/|Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patent can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . Cover skin burns with dry sterile dressings after decontamination ... . /Iodine and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Iodine and related compounds/

/SIGNS AND SYMPTOMS/ Long term exposure: Chronic exposure can cause injury to kidneys and spleen, hypotension, palpitation, ataxia and weakness. Very irritating substances may cause lung damage. Prolonged absorption of /hydriodic acid/ can cause skin rash. headache, irritation of mucous membranes with running nose.|/SIGNS AND SYMPTOMS/ Edema of the glottis necessitating tracheotomy has occurred.|/SIGNS AND SYMPTOMS/ Inhalation of hydrogen iodide causes irritation of the upper respiratory tract, and a concentration of about 35 ppm causes irritation of the throat after short exposure. More severe exposures result in pulmonary edema, and often in laryngeal edema.|/SIGNS AND SYMPTOMS/ /If/ ... decomposition in simple aqueous soln ... free iodine ... liberated and if taken internally ... it is irritating to the alimentary tract.|For more Human Toxicity Excerpts (Complete) data for HYDROGEN IODIDE (8 total), please visit the HSDB record page.

hydriodic acid

Serious local effects by all routes of exposure.

Cough. Sore throat. Burning sensation behind the breastbone. Shortness of breath. Laboured breathing.

Redness. Pain. Skin burns. Blisters. ON CONTACT WITH LIQUID: FROSTBITE.

Redness. Pain. Severe burns.

HYDRIODIC ACID SYRUP /AN EXPECTORANT/ CONTAINS APPROX 1.4% HYDRIODIC ACID ... /HYDRIODIC ACID SYRUP; FORMER/|Commercial aqueous hydrogen iodide solution contains 40-55 wt% hydrogen iodide|Forms colorless liquid at atmospheric pressure when cooled with dry ice & ether or other cooling mixture /Hydrogen iodide gas/|A solution of hydrogen iodide in water.|Grades: Technical, 47%; NF, diluted 10% /Hydriodic acid/

Agriculture, forestry, fishing and hunting|Hydriodic acid: ACTIVE

Health Hazards -> Corrosives