四氢噻吩

Other Classes -> Thiophenes

Flammable agents - 3rd degree

1.8 (estimated by method of Leo et al, 1971).

1.8

0.9987 @ 20 °C/4 °C

Relative density (water = 1): 1.0

INSOLUBLE IN WATER; SOL IN ALL PROPORTIONS IN ALCOHOL, ETHER, ACETONE, BENZENE, IN ORGANIC SOLVENTS

Solubility in water: none

55 °F (12 °C)

12 °C

121.12 °C @ 760 MM HG

119-121 °C

-96.16 °C

-96.2 °C

Danger

H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P317, P321, P330, P332+P317, P337+P317, P362+P364, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

This chemical does not meet GHS hazard criteria for 11.5% (36 of 314) of reports.

Danger

H225 (88.5%): Highly Flammable liquid and vapor [Danger Flammable liquids]

Chemical: Thiophene, tetrahydro-

Commission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)

Thiophene, tetrahydro- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Thiophene, tetrahydro- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 29-11-2017 https://echa.europa.eu/registration-dossier/-/registered-dossier/2145

Thiophene, tetrahydro-: HSNO Approval: HSR001225 Approved with controls

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

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.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

· May cause toxic effects if inhaled or absorbed through skin.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

Use water spray, alcohol-resistant foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

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.

Rinse mouth. Rest.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

General First Aid:

· Wear positive pressure self-contained breathing apparatus (SCBA).

50.0 [ppm]

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.

Excerpt from ERG Guide 130 [Flammable Liquids (Water-Immiscible / Noxious)]:

Immediate precautionary measure

Atmospheric: Expected to rapidly oxidize by hydroxyl radicals in the atmosphere.

Terrestrial: Little tendency to sorb to soil.

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.

In studies conducted according to FHSA using the patch test technique on albino rabbit skin, the substance did not produce visible destruction or irreversible alterations in the tissue at the site of contact; not a skin irritant.

In studies conducted according to FHSA using the standard eye irritation test in albino rabbits, the noncorrosive substance did not induce local inflammatory reaction; not an eye irritant.

American Cyanamid (1982) tested tetrahydrothiophene in Salmonella Ames assay. The compound did not show mutagenicity to strains TA98, TA100, TA1535, and TA1537 at a concentration of 1000 ul/plate. Information on metabolic activation was not given. The compound was also non-mutagenic to strain WP-2 uvrA- of E. coli.

Tetrahydrothiophene

PDF Document

Inadequate information to assess carcinogenic potential

2007

Used as a solvent, chemical intermediate, and odorant for fuel gas and other gases and liquids; [HSDB]

SOLVENT; INTERMEDIATE; FUEL GAS ODORANT

A HERBICIDAL COMPOSITION BASED ON BIPYRIDYLIUM COMPD CONTAIN TETRAHYDROTHIOPHENE AS THE OLFACTORY ALERTING AGENT IN ORDER TO AVERT INADVERTENT POISONING

THIOLANE IS USED AS A GROWTH REGULATOR

Used in odorization operations of natural gas.

For more Uses (Complete) data for TETRAHYDROTHIOPHENE (8 total), please visit the HSDB record page.

2023: 75,000 - <500,000 lb

200,000 to 2,000,000 lb

Vapor-phase reaction of tetrahydrofuran and hydrogen sulfide over a heteropolyacid-promoted metal oxide catalyst followed by separation and distillation of tetrahydrothiophene.

Thiophene is reduced to tetrahydrothiophene by sodium in alcohol or ammonia, or with palladium, cobalt, molybdenum or rhenium catalysts under carefully controlled conditions.

Utilities

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.