Product Identification

Product Name

1,5-Pentanedithiol

Synonyms

1,5-Dimercaptopentane
1,5-Pentanedithiol

CAS

928-98-3

Formula

C5H12S2

Molecular Weight

136.28

EINECS

213-194-9

Beilstein/Gmelin

1732335

Beilstein Reference

4-01-00-02542

Physical and Chemical Properties

Appearance

Very slightly yellow liquid. With a stench.

Solubility in water

Insoluble

Melting Point

-68.5

Boiling Point

229

Vapor Pressure

0.11 (25 C)

Density

1.0375 g/cm3 (0 C)

pKa/pKb

10.21 (pKa)

Partition Coefficient

2.27

Heat Of Vaporization

49.6 kJ/mol

Vapor Density

4.7

Refractive Index

1.52 (20 C)

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

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

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

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 tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.

EC Risk Phrase

R 20/22

EC Safety Phrase

S 23 36/37

UN (DOT)

2810

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

Prolonged or repeated exposure may cause nausea, dizziness, and headache.

Fire Fighting Measures

Flash Point

95

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Provide ventilation.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

UN Number

2810

HS Code

2930 90 70