Agent Name

Benzenethiol

Alternative Name

Phenyl mercaptan

CAS Number

108-98-5

Formula

C6-H6-S

Major Category

Other Classes

Synonyms

Mercaptobenzene; Thiophenol; Phenyl mercaptan; [NIOSH] UN2337

Category

Thiols

Description

Water-white liquid with an offensive, garlic-like odor; Note: A solid below 5 degrees F; [NIOSH]

Sources/Uses

Used as a solvent and mosquito larvicide; used in chemical synthesis; [ACGIH]

Comments

Phenyl mercaptan causes tearing of the eyes; it is a skin and respiratory irritant. Volunteers tolerate 1.5 ppm for 5 minutes (eye irritation), 8 ppm for 10 seconds (eye irritation), and a single breath of 35 ppm (nasal irritation). [ACGIH] Inhalation may cause CNS effects; [ICSC] Liquid is corrosive to skin. [CHRIS] Corrosive to skin; [Quick CPC] See "THIOLS."

Exposure Assessment
Skin Designation (ACGIH)

Yes

TIH

Yes

TLV (ACGIH)

0.1 ppm

Vapor Pressure

1.93 mm Hg

Odor Threshold Low

3.0E-5 ppm

Odor Threshold High

0.0003 ppm

Lethal Concentration

LC50 (rat) = 33 ppm/4h

Explanatory Notes

Detection odor threshold from AIHA (mean = 0.00030 ppm); Flash point = 127 deg F;

Adverse Effects
Other Poison

Chemical Asphyxiant

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.