| Agent Name |
Ethanethiol |
|---|
| Alternative Name |
Ethyl mercaptan |
|---|
| CAS Number |
75-08-1 |
|---|
| Formula |
C2-H6-S |
|---|
| Major Category |
Other Classes |
|---|
| Synonyms |
1-Mercaptoethane; Ethanethiol; Ethyl hydrosulfide; Ethyl sulfhydrate; Ethyl thioalcohol;
LPG ethyl mercaptan 1010; Mercaptoethane; Thioethanol; Thioethyl alcohol; [ChemIDplus] UN2363
|
|---|
| Category |
Thiols |
|---|
| Description |
Colorless liquid with a strong, skunk-like odor; Note: A gas above 95 degrees F; [NIOSH] |
|---|
| Sources/Uses |
Used as an odorant for natural gas; used as an intermediate in the plastic, pesticide, and organic chemical industries; [ACGIH] |
|---|
| Comments |
Its toxicity in rats and mice is similar to that of butyl mercaptan. Acutely, it is about 1/5 as toxic as hydrogen sulfide. Human volunteers exposed to 1mg/m3 (0.5 ppm) experienced no symptoms, while those exposed to 10 mg/m3 (4 ppm) complained of mucous membrane irritation and fatigue. [ACGIH] Liver necrosis occurs in animals receiving sublethal doses. [HSDB] |
|---|
| Exposure Assessment |
|---|
| Skin Designation (ACGIH) |
No |
|---|
| TLV (ACGIH) |
0.5 ppm |
|---|
| PEL (OSHA) | Ceiling(OSHA) = 10 ppm |
|---|
| MAK |
0.5 ppm |
|---|
| IDLH (NIOSH) |
500 ppm |
|---|
| Excerpts from Documentation for IDLHs |
Basis for original (SCP) IDLH: The chosen IDLH is based on the mouse 4�hour LC50 of 2,770 ppm [Fairchild and Stokinger 1958 cited by ACGIH 1971]. . . . Human data: None relevant for use in determining the revised IDLH. |
|---|
| Vapor Pressure |
529 mm Hg |
|---|
| Odor Threshold Low |
9.8 x 10 -05 ppm |
|---|
| Odor Threshold High |
0.003 ppm |
|---|
| Lethal Concentration |
LC50 (rats) = 4,420 ppm/4H |
|---|
| Explanatory Notes |
Detection odor threshold from AIHA (mean = 0.00035 ppm); Flash point = -48.3 C; |
|---|
| Flammability (NFPA) |
4: burns readily |
|---|
| Adverse Effects |
|---|
| Hepatotoxin |
Hepatotoxin, Secondary |
|---|
| Other Poison |
Chemical Asphyxiant |
|---|
| Links to Other NLM Databases |
|---|
| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: ETHYL MERCAPTAN
|
|---|
