(Dichloroethylsilyl)benzene

205.16

205.16

214-407-8

Z8JOW05OJM

2435

Colorless liquid

0

5.47

Ethylphenyldichlorosilane is a colorless liquid with a pungent odor. It is decomposed by water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue.

1.184 g/cm³

225-226 °C

92°C

1.5321

Reacts vigorously with water to form hydrogen chloride(hydrochloric acid)

All containers, pipes, apparatus, installations, and structures used for manufacture, storage, transport, or use of these substances must be of material resistant to corrosive substances or be protected by suitable coatings All containers or receptacles should be clearly labelled to indicate their contents and should bear the danger symbol for corrosives. /Corrosive substances/

Inhalation-rat LC 10 mg/m3/2 hours; inhalation-mouse LC 10 mg/m3/2 hours

Flammable; emits toxic hydrogen chloride gas in water; emits toxic hydrogen chloride and phenol gas in fire

Lower explosive limit: 3.4%; Upper explosive limit: > or = 9.5%

SHARP ODOR LIKE HYDROCHLORIC ACID

Fumes strongly in moist air|The reaction of organosilanes with halogens and halogen compounds usually proceeds in good yield through cleavage of the Si--H bond and formation of the silicon-halogen bond. Reaction with fluorine, however, does not proceed satisfactorily because of cleavage of not only the Si--H but also C--Si and C--H bonds. Direct halogenation with chlorination, bromine, and iodine proceeds smoothly, however. /Organosilanes/

Reacts vigorously with water to form hydrogen chloride(hydrochloric acid). Based on a scenario where the chemical is spilled into an excess of water (at least 5 fold excess of water), half of the maximum theoretical yield of Hydrogen Chloride gas will be created in 33 minutes. After mixing particular chemicals into water, there may be a delay of 1-10 minutes before gas generation may be observed. For this chemical, a 86 second induction time was observed. Experimental details are in the following: "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. Brown, H.M. Hartmann, W.A. Freeman, and W.D. Haney, Argonne National Laboratory, Argonne, Illinois, June 2009.

Chlorosilanes

Strong Reducing Agent

Chlorosilanes, such as ETHYLPHENYLDICHLOROSILANE, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases. Special Hazards of Combustion Products: Toxic hydrogen chloride and phosgene fumes may be formed.

103 BTU/LB = 57 CAL/G = 2.4X10+5 JOULES/KG

II

8

2435

34

24/25

Storehouse ventilated at low temperature and dry; stored separately from alkali, oxidant and acid

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal and plant life; and conformance with environmental and public health regulations.

Reacts with surface moisture to form hydrogen chloride, which is corrosive to common metals.|Forms explosive mixture with air. Contact with oxidizers, combustible materials, strong bases can cause a fire or explosion hazard. Contact with water, steam, moisture forms corrosive chloride gases including hydrogen chloride. Attacks most metals. Attacks some plastics, rubber, and coatings.|Will react with water or steam to produce toxic and corrosive fumes. Can react with oxidizing materials.|With a little ammonia, it forms a self-igniting product. /Chlorosilanes/

Special Hazards of Combustion Products: Toxic hydrogen chloride and phosgene fumes may be formed. Behavior in Fire: Difficult to extinguish; re-ignition may occur. Contact with water applied to adjacent fires will generate irritating hydrogen chloride gas. (USCG, 1999)|Corrosives, Flammable - 2nd degree, Reactive - 1st degree

Excerpt from ERG Guide 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]: 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: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2435 datasheet. 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 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. A vapor-suppressing foam may be used to reduce vapors. FOR CHLOROSILANES, use AFFF alcohol-resistant medium-expansion foam to reduce vapors. DO NOT GET WATER on spilled substance or inside containers. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Prevent entry into waterways, sewers, basements or confined areas. SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean, non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal. (ERG, 2016)

Acid-vapor-type respiratory protection; rubber gloves; chemical worker's goggles; other equipment as necessary to protect skin and eyes. (USCG, 1999)|Those who have to handle ... /chlorosilanes/ should wear goggles and if necessary a /NIOSH approved respirator/. Handling should be done as far as possible under suitably ventilated hoods. /Chlorosilanes/|Acid-vapor type respiratory protection; rubber gloves; chemical worker's goggles; other equipment as necessary to protect skin and eyes.|Where ... /closed-circuit apparatus/ is not possible ... rely on suitable personal protective equipment. Such equipment should ... comprise: corrosion-resistant and impervious suits or overalls, foot protection, hand and arm protection, head, ... eye, and face protection; where corrosive gases /are/ expected, appropriate respiratory protective equipment is required, ranging from simple respirators to air or oxygen lines or self-contained breathing apparatus, coupled with gas-tight goggles ... No universally suitable material for ... personal equipment can be indicated, but ... natural rubbers, synthetic rubbers, polyvinyl chloride, polypropylene, or polyethylene either in sheet form or with fabric backing are suitable. Where aprons are used ... these should have bibs; sleeves should be worn outside gauntlets or gloves and ... trouser legs should cover tops of shoes in order to prevent splashes .... /Corrosive substances/

Combustible liquid.|With a little ammonia, it forms a self-igniting product. /Chlorosilanes/|Certain strong corrosives may, on contact with organic matter or other chemicals, cause fire ... /Corrosive substances/

Lower explosive limit: 3.4%; Upper explosive limit: > or = 9.5%

If material on fire or involved in fire: use dry chemical, dry sand, or carbon dioxide; 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; cool all affected containers with flooding quantities of water; apply water from as far a distance as possible.|Wear positive pressure self-contained breathing apparatus ... Wear appropriate chemical protective gloves, boots, and goggles.|Fire may restart after it has been extinguished. Vapors are heavier than air and will collect in low areas. Vapors may travel long distances to ignition sources and flashback. Vapors in confined areas may explode when exposed to fire. Containers may explode in fire. Storage containers and parts of containers may rocket great distances, in many directions. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors or shows any signs of deforming), withdraw immediately to a secure position.

SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.|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. Absorb liquids in vermiculite, dry sand, earth, peat, carbon, or a similar material and deposit in sealed containers. 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.

SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits 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.|SRP: Contaminated protective clothing should be segregated in a manner that results in no direct personal contact by personnel who handle, dispose of, or clean the clothing. Quality assurance procedures to confirm the efficacy of the cleaning procedures should be implemented prior to the decontaminated protective clothing being returned for reuse by the workers. Contaminated clothing (including shoes/socks) should not be taken home at end of shift, but should remain at employee's place of work for cleaning.|SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions 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. Ensure that the local ventilation moves the contaminant away from the worker.|Contact lenses should not be worn when working with this chemical.|For more Preventive Measures (Complete) data for Ethylphenyldichlorosilane (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. /Ethylphenyldichlorosilane (when spilled in water)/|Table of Water-Reactive Materials Which Produce Toxic Gases|/GUIDE 156: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE/WATER-SENSITIVE)/ Fire or Explosion: Combustible material: may burn but does not ignite readily. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.|/GUIDE 156: SUBSTANCES - TOXIC AND/OR CORROSIVE (COMBUSTIBLE/WATER-SENSITIVE)/ Health: TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Contact with molten substance may cause severe burns to skin and eyes. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.|For more DOT Emergency Guidelines (Complete) data for Ethylphenyldichlorosilane (10 total), please visit the HSDB record page.

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.

Irritating to eyes, nose, and throat. Harmful if inhaled.|Causes severe eye and skin burns. Serious health hazard. May be harmful if inhaled. Irritating to eye, skin, and respiratory system. /Dimethylchlorosilane/|A skin and severe eye irritant.|Hazard warning: the vapors have adequate warning properties of irritation of the eye, nose, and respiratory passages before sufficient exposure occurs to cause injury to the eyes. The principal danger is from splash contamination. /Chlorosilanes/|/SRP: All chlorosilanes release hydrogen chloride in the presence of water/water vapor./ All the chlorosilanes were found to cause severe damage of the cornea and lids. More severe damage was caused by the alkylchlorosilanes than by tetrachlorosilane (silicone tetrachloride). The principal danger is from splash contamination. /Chlorosilanes/

D003; A waste containing ethylphenyldichlorosilane may (or may not) be characterized a hazardous waste following testing for the reactivity characteristics as prescribed by the Resource Conservation and Recovery Act (RCRA) regulations.

D003; A solid waste containing ethylphenyldichlorosilane may become characterized as a hazardous waste when subjected to testing for reactivity as stipulated in 40 CFR 261.23, and if so characterized, must be managed as a hazardous waste.

practically nontoxic

The reaction of organosilanes with halogens and halogen compounds usually proceeds in good yield through cleavage of the Si--H bond and formation of the silicon-halogen bond. Reaction with fluorine, however, does not proceed satisfactorily because of cleavage of not only the Si--H but also C--Si and C--H bonds. Direct halogenation with chlorination, bromine, and iodine proceeds smoothly, however. /Organosilanes/

Silane compounds decompose upon contact with water or steam to produce heat and toxic and corrosive fumes of hydrogen chloride. Silane ignites spontaneously in air(1,2). With a little ammonia, it forms a self-igniting product(1). With a little ammonia, it forms a self-igniting product(1). /Chlorosilanes/

... Chlorosilanes will be rapidly hydrolyzed upon contact with tissue fluids to release hydrochloric acid. /Chlorosilanes/

Inhalation irritates nose and throat. Contact with liquid causes severe burns of eyes and skin. Ingestion causes severe burns of mouth and stomach. (USCG, 1999)

INHALATION: remove victim to fresh air; give artificial respiration if needed; call physician. EYES: flush with water for 15 min.; obtain medical attention immediately. SKIN: flush with water; obtain medical attention if burning has occurred. INGESTION: if victim is conscious, give large amounts of water, then induce vomiting; get medical attention. (USCG, 1999)

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Silane, Chlorosilane, 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 ... . Anticipate seizures 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 patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal (refer to ingestion protocol in Section Three ... . Cover skin burns with sterile dressings after decontamination ... . /Silane, Chlorosilane, 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 ... . 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 ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Silane, Chlorosilane, and related compounds/

/SIGNS AND SYMPTOMS/ Acute inhalation exposure may result in sneezing, choking, laryngitis, dyspnea (shortness of breath), respiratory tract irritation, and chest pain. Higher exposure can cause pulmonary edema, a medical emergency that can be delayed for several hours. This can cause death. Bleeding of nose and gums, ulceration of the nasal and oral mucosa, pulmonary edema, chronic bronchitis, and pneumonia may also occur. If the eyes have come in contact with dimethyldichlorosilane, irritation, pain, swelling, corneal erosion, and blindness may result. Dermatitis (red, inflamed skin), severe burns, pain, and shock generally follow dermal exposure. Inhalation irritates mucous membranes. Severe gastrointestinal damage may occur. Vapors cause severe eye and lung injury. Upon short contact, second and third degree burns may occur. Signs and symptoms of acute ingestion of dimethyldichlorosilane may be severe and include increased salivation, intense thirst, difficulty swallowing, chills, pain, and shock. Oral, esophageal, and stomach burns are common. /Dimethyldichlorosilane/|/SIGNS AND SYMPTOMS/ Inhalation irritates mucous membranes. Contact with liq causes severe burns of eyes and skin ... Vapors cause severe irritation of eyes and throat and can cause eye and lung injury. They cannot be tolerated even at low concn. Causes second- and third-degree burns on short contact ...|/SIGNS AND SYMPTOMS/ Causes severe eye and skin burns. Serious health hazard. May be harmful if inhaled. Irritating to eye, skin, and respiratory system. /Dimethylchlorosilane/|/SIGNS AND SYMPTOMS/ Short Term Exposure: Exposure can irritate the eyes, nose, and throat. It is a corrosive chemical and contact can cause severe skin and eye burns leading to permanent eye damage. High levels can irritate the lungs causing coughing and/or shortness of breath. Higher exposures can cause pulmonary edema, a medical emergency that can be delayed for several hours. This can cause death. Long Term Exposure: very irritating substances may affect the lungs.|For more Human Toxicity Excerpts (Complete) data for Ethylphenyldichlorosilane (7 total), please visit the HSDB record page.

Grade: Commercial.

Benzene, (dichloroethylsilyl)-: ACTIVE

Fire Hazards -> Corrosives, Flammable - 2nd degree, Reactive - 1st degree