Product Identification

Product Name

1-Mercaptooctane

Synonyms

1-Mercaptoctane
Octane-1-thiol
Octyl mercaptan
Octylthiol

CAS

111-88-6

Formula

C8H18S

Molecular Weight

146.30000000000001

EINECS

203-918-1

Beilstein/Gmelin

1733101

Beilstein Reference

4-01-00-01767

EC Class

dangerous for the environment

Physical and Chemical Properties

Appearance

Colorless liquid with an offensive odor.

Solubility in water

Insoluble

Melting Point

-49

Boiling Point

199

Vapor Pressure

0.49 (25 C)

Density

0.859 g/cm3 (0 C)

pKa/pKb

10.64 (pKa)

Partition Coefficient

4.44

Heat Of Vaporization

45.4 kJ/mol

Usage

Polymerization conditioner, in synthesis.

Vapor Density

5.04

Saturation Concentration

2040 ppm at 37.7 C (calculated)

Refractive Index

1.4540 (20 C)

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.

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 immediately.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. 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. Do not breathe dust, vapor, mist, or gas. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Ingestion

May cause digestive tract disturbances. May be harmful if swallowed.

Inhalation

May be fatal if inhaled. May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

EC Risk Phrase

R 36/38

EC Safety Phrase

S 23 26 36

UN (DOT)

3336

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

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Poison Class

4

Fire Fighting Measures

Flash Point

68

Autoignition

240

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. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Containers may explode when heated. Extinguishing media: Use water spray to cool fire-exposed containers. Cool containers with flooding quantities of water until well after fire is out. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Lower exp. limit

.8

Fire Potential

HIGHLY FLAMMABLE.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Disposal Code

6

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids, alkali metals.

Decomposition

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

Combustion Products

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

Transport Information

UN Number

3336

Hazard Class

3

Packing Group

I; II; III

HS Code

2930 90 70