2-Pentanethiol

  • sec-Pentyl mercaptan
  • 1-Methylbutanethiol
  • sec-Amylmercaptan
Formula
C5H12S
Structure
Description
Unpleasant odor.

Registry Numbers and Inventories.
CAS
2084-19-7
EC (EINECS/ELINCS)
218-224-4
UN (DOT)
1993
Beilstein/Gmelin
1718825
Beilstein Reference
4-01-00-01662
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C5H12S
Formula mass
104.22
Melting point, °C
-169
Boiling point, °C
113
Vapor pressure, mmHg
23 (25 C)
Density
0.8327 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.4412 (20 C)
pKa/pKb
10.69 (pKa)
Heat of vaporization
36.3 kJ/mol

Hazards and Protection.
Storage
Keep container closed. Keep away from heat, sparks, and open flame.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved respirator.
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
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide.

Fire.
Flash Point,°C
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.
Hazards
Flammable liquid. Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure effects
Flammable. Irritant. Irritating to eyes, respiratory system and skin. Stench.
   Ingestion
May be harmful if swallowed.
   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.

First aid
 
   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.

Transport.
UN number
1993
Response guide
Hazard class
3
Packing Group
III