Product Identification

Product Name

Ethanethioamide

Synonyms

Acetothioamide
Ethanethioamide
TAA

CAS

62-55-5

Formula

C2H5NS

Molecular Weight

75.14

EINECS

200-541-4

RTECS

AC8925000

RTECS Class

Tumorigen; Mutagen; Reproductive Effector

Merck

12,9453

Beilstein/Gmelin

506006

Beilstein Reference

4-02-00-00565

EC Index Number

616-026-00-6

EC Class

Carcinogenic Category 2; Harmful; Irritant; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White crystals with a mercaptan odor.

Solubility in water

163 g/L

Boiling Point

112

Vapor Pressure

25 C)

Density

1.336 g/cm3

pKa/pKb

12.32 pKb)

Heat Of Vaporization

35.0 kJ/mol

Heat Of Combustion

-2033 kJ/mol

Usage

As replacement for gaseous hydrogen sulfide in qualitative analysis.

Vapor Density

N/R

Odor threshold

94.7 ppm

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Induce vomiting by giving one teaspoon of Syrup of Ipecac.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. SPEEDY ACTION IS CRITICAL!

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a cool, dry place. Keep containers tightly closed.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get on skin or in eyes. Do not ingest or inhale.

Hazards Identification

Inhalation

May cause respiratory tract irritation. May cause effects similar to those described for ingestion.

Skin

May be absorbed through the skin in harmful amounts. If absorbed, causes symptoms similar to those of ingestion.

Eyes

May cause eye irritation.

Ingestion

Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver damage. May cause tissue anoxia, characterized by weakness, headache, dizziness, confusion, cyanosis, weak and irregular heart beat, collapse, unconsciousness, convulsions, coma and death.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 45 22 36/38 52/53

EC Safety Phrase

S 53 45 61

UN (DOT)

2811

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Possible cancer hazard based on tests with laboratory animals. Chronic ingestion may cause liver damage. May cause reproductive and fetal effects.

Exposure limit(s)

NIOSH REL*: TWA 2 mg/m3 OSHA PEL*: TWA 2 mg/m3 [*Note: REL and PEL also apply to other inorganic tin compounds (as Sn) except tin oxides.] IDLH 100 mg/m3 (as Sn)

Poison Class

1*

Fire Fighting Measures

Flash Point

21

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.

Fire Potential

Combustible.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.

Stability and Reactivity

Disposal Code

6

Incompatibilities

Mineral acids.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, oxides of nitrogen, oxides of sulfur, carbon dioxide, hydrogen sulfide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2930 90 70