Product Identification

Product Name

Bis(2-mercaptoethyl) sulfide

Synonyms

1,4,7-Trithiaheptane
1,5-Dimercapto-3-thiapentane
1-Mercapto-2-(mercaptoethylthio)ethane
2,2'-Dimercaptodiethyl sulfide
Bis(2-mercaptoethyl) sulfide
Bis(2-sulfanylethyl) sulfide

CAS

3570-55-6

Formula

C4H10S3

Molecular Weight

154.32

EINECS

222-671-0

Physical and Chemical Properties

Appearance

Liquid with a stench.

Solubility in water

Insoluble

Melting Point

-31

Boiling Point

276

Vapor Pressure

0.008 (25 C)

Density

1.183 g/cm3 (20 C)

pKa/pKb

9.48 (pKa)

Partition Coefficient

2.07

Heat Of Vaporization

49.4 kJ/mol

First Aid Measures

Ingestion

Seek medical treatment.

Inhalation

Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.

Skin

Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.

Eyes

Rinse opened eye for several minutes under running water. Then consult a doctor.

Handling and Storage

Storage

Keep container tightly sealed. Store in cool, dry conditions in well sealed containers.

Exposure Controls/Personal Protection

Personal Protection

Protective work clothing. Chemical protective gloves. Safety glasses or goggles.

Exposure Effects

Thiols/mercaptans are skin, eye and respiratory irritants. Inhalation can cause central nervous system effects. Strong penetrating odor acts to minimize inhalation exposure.

Fire Fighting Measures

Flash Point

90

Fire Fighting

Extinguish with carbon dioxide, extinguishing powder or water spray. Fight larger fires with water spray or alcohol resistant foam. Wear self-contained respirator. Wear fully protective impervious suit.

Accidental Release Measures

Small spills/leaks

Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust).

Stability and Reactivity

Stability

Decomposition will not occur if used and stored according to specifications.

Incompatibilities

Oxidizing agents.

Combustion Products

Carbon monoxide and carbon dioxide. Sulfur oxides (SOx). Hydrogen sulfide.

Hazards Identification

EC Risk Phrase

R: 20 36/37/38

EC Safety Phrase

S: 9 23 26 36/37