Tetrahydrothiophene

88.17130

88.17

203-728-9

744EHT13FM

0677

5272

2412

DTXSID3047760

WATER-WHITE LIQUID

2942000000

25.30000

1.51340

Tetrahydrothiophene appears as a water-white liquid. About the same density as water and insoluble in water. Vapors heavier than air. Used as a solvent and to make other chemicals.

0.9987 g/cm³ @ Temp: 20 °C

-96.16 °C

121.12 °C @ Press: 760 Torr

13ºC

1.503-1.505

H2O: immiscible

Flammables area

18 mm Hg ( 25 °C)

Relative vapour density (air = 1): 3.05

vol% in air: 1.12.3

Stench.

1.97e-11 cm3/molecule*sec

WEIGHT/VOLUME CONVERSION: 3.60 MG/CU M= 1 PPM

Highly flammable. Insoluble in water.

Sulfides, Organic

Highly Flammable

Organosulfides, such as TETRAHYDROTHIOPHENE, are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Slow addition of hydrogen peroxide to the thiophene resulted in explosions on three occasions, Chem. Eng. News, 1974, 52(39), 3.

200 °C

The vapour is heavier than air and may travel along the ground; distant ignition possible.

II

3

UN 2412

2

R11; R20/21/22; R36/38; R52/53

S16-S23-S36/37-S61

XN0370000

F; Xn

Fireproof. Separated from strong oxidants. Cool. Store in an area without drain or sewer access.

Stability Highly flammable. Vapour-air mixtures explosive in some proportions; note low flash point and fairly wide explosion limit range. Heavier than air, so potentially explosive mixtures may travel considerable distances to source of ignition.

P210-P273-P280-P305 + P351 + P338

H225-H302-H312-H315-H319-H332-H412

Burn in a chemical incinerator equipped with an afterburner and scrubber but exert care in igniting as this material is highly flammable.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. (ERG, 2016)|Highly flammable. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire. Vapour/air mixtures are explosive.|Flammable - 3rd degree

|Danger|H225: Highly Flammable liquid and vapor [Danger Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P378, P403+P235, and P501|H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]|Aggregated GHS information provided by 307 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P303+P361+P353, P304+P312, P304+P340, P312, P330, P370+P378, P403+P235, and P501

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: CAUTION: All these products have a very low flash point: Use of water spray when fighting fire may be inefficient. SMALL FIRE: Dry chemical, CO2, water spray or regular foam. LARGE FIRE: Water spray, fog or regular foam. Do not use straight streams. Move containers from fire area if you can do it without risk. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2016)|Use water spray, alcohol-resistant foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet). 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 130 [Flammable Liquids (Water-Immiscible / Noxious)]: 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 or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material. LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2016)

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. (ERG, 2016)

Flammable liquid

THREE VIOLENT EXPLOSIONS OCCURRED WHILE OXIDIZING TETRAHYDROTHIOPHENE TO TETRAMETHYLENE SULFOXIDE WITH HYDROGEN PEROXIDE. FOR 10 YR SIMILAR OXIDATIONS WERE CARRIED OUT WITH NO EXPLOSIONS. THE THREE RUNS THAT EXPLODED WERE PROCEEDING NORMALLY UNTIL WHISPY WHITE SMOKE FORMED ABOVE THE LIQUID LAYER JUST PRIOR TO THE CONCUSSION.|Explosive limits , vol% in air: 1.1-12.3

/GUIDE 130: FLAMMABLE LIQUIDS (Non-Polar/Water-Immiscible/Noxious)/ Fire or Explosion: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.|/GUIDE 130: FLAMMABLE LIQUIDS (Non-Polar/Water-Immiscible/Noxious)/ Health: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.|/GUIDE 130: FLAMMABLE LIQUIDS (Non-Polar/Water-Immiscible/Noxious)/ Public Safety: CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number listed on the inside back cover. As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.|/GUIDE 130: FLAMMABLE LIQUIDS (Non-Polar/Water-Immiscible/Noxious)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection.|For more DOT Emergency Guidelines (Complete) data for TETRAHYDROTHIOPHENE (8 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.

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.

Fireproof. Separated from strong oxidants. Cool. Store in an area without drain or sewer access.

The substance may cause effects on the central nervous system.

NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting.

Use closed system or ventilation.

Protective gloves.

Wear safety spectacles.

LD50 Rat oral 2,450 mg/kg

Possible release from natural gas leaks due to its use as an odorant.

Atmospheric: Expected to rapidly oxidize by hydroxyl radicals in the atmosphere.|Terrestrial: Little tendency to sorb to soil.

Because of its low boiling point and low octanol water partition coeficient it should not bioconcentrate.

EXPTL USE: AS INTRAMUSCULAR INJECTIONS FOR TREATING GASTROENTEROCOLITIS IN SWINE.

Identified as a human metabolite of asparagus.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution. (ERG, 2016)

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]: 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. 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. Wash skin with soap and water. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)

Fresh air, rest.

Rinse and then wash skin with water and soap.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Workers at a factory producing tetrahydrothiophene complained of headache, palpitations, giddiness, nausea or a general feeling of being unwell, after a short (unspecified) exposure.|...APPEARS TO BE SLIGHTLY LESS TOXIC THAN THIOPHENE. HOWEVER, LITTLE INFORMATION IS AVAILABLE.

tetrahydrothiophene

The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

Headache. Nausea. Dizziness. Palpitations.

Industrial gas manufacturing|Thiophene, tetrahydro-: ACTIVE|A DISCUSSION IS GIVEN ON WASTEWATER FORMED IN NATURAL GAS UNDERGROUND STORAGE RESERVOIRS; ON AIR POLLUTION & WASTEWATERS; ON METHODS FOR TREATMENTS OF WASTEWATERS AND THE PREVENTION & CONTROL OF AIR POLLUTION IN THE ODORIZATION OF NATURAL GAS WITH TETRAHYDROTHIOPHENE.

THIOPHANE WAS DETERMINED BY THE HEAD-SPACE GAS CHROMATOGRAPHY TECHNIQUE IN SEWAGE EFFLUENTS.

Fire Hazards -> Flammable - 3rd degree