Product Identification

Product Name

2-Pentanethiol

Synonyms

1-Methylbutanethiol
Pentane-2-thiol
sec-Amylmercaptan
sec-Pentyl mercaptan

CAS

2084-19-7

Formula

C5H12S

Molecular Weight

104.22

EINECS

218-224-4

Beilstein/Gmelin

1718825

Beilstein Reference

4-01-00-01662

Physical and Chemical Properties

Appearance

Unpleasant odor.

Solubility in water

Insoluble

Melting Point

-169

Boiling Point

113

Vapor Pressure

23 (25 C)

Density

0.8327 g/cm3 (20 C)

pKa/pKb

10.69 (pKa)

Heat Of Vaporization

36.3 kJ/mol

Refractive Index

1.4412 (20 C)

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of skin contact, flush with copious amounts of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.

Eyes

In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage

Keep container closed. Keep away from heat, sparks, and open flame.

Hazards Identification

Inhalation

May be harmful if inhaled. Material is irritating to mucous membranes and upper respiratory tract.

Skin

Causes skin irritation. May be harmful if absorbed through the skin.

Eyes

Causes eye irritation.

Ingestion

May be harmful if swallowed.

Hazards

Flammable liquid. Emits toxic fumes under fire conditions.

UN (DOT)

1993

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles.

Respirators

Government approved respirator.

Exposure Effects

Flammable. Irritant. Irritating to eyes, respiratory system and skin. Stench.

Fire Fighting Measures

Flash Point

15

Fire Fighting

Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

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

Accidental Release Measures

Small spills/leaks

Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools and transport outdoors. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, Carbon dioxide.

Combustion Products

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

Transport Information

UN Number

1993

Hazard Class

3

Packing Group

III