Product Identification

Product Name

Lauryl mercaptan

Synonyms

1-Mercaptododecane
Dodecane-1-thiol
Dodecyl mercaptan
Lauryl mercaptan

CAS

112-55-0

Formula

C12H26S

Molecular Weight

202.41

EINECS

203-984-1

RTECS

JR3155000

RTECS Class

Mutagen

Beilstein/Gmelin

969337

Beilstein Reference

4-01-00-01851

EC Class

irritant

Physical and Chemical Properties

Appearance

Colorless to pale yellow liquid, mild skunk odor.

Solubility in water

Insoluble

Melting Point

-7

Boiling Point

266

Vapor Pressure

2.5

Density

0.855 g/cm3

Usage

In manufacture of synthetic rubber, plastics, pharmaceuticals, insecticides, fungicides.

Saturation Concentration

3300 ppm at 25 C (calc.)

Refractive Index

1.464

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

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

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

Store in a cool, dry place. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

Causes skin irritation. May cause dermatitis. May cause reddening of the skin. Chronic exposure may result in sensitization.

Eyes

Causes eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

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.

EC Risk Phrase

R 36/38 43

EC Safety Phrase

S 26 36

UN (DOT)

1228

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.

Exposure Effects

Repeated exposure may cause sensitization dermatitis.

Exposure limit(s)

NIOSH REL: C 0.5 ppm (4.1 mg/m3) 15-minute

Poison Class

4

Fire Fighting Measures

Flash Point

87

Autoignition

230

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 fog, dry chemical, carbon dioxide, or regular foam.

Fire Potential

Slightly flammable. Combustion requires preheating.

Accidental Release Measures

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.

Stability and Reactivity

Disposal Code

6

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong acids, strong bases, alkali metals.

Decomposition

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

Combustion Products

Poisonous and irritating gases (e.g., sulfur dioxide) are generated in fires.

Transport Information

UN Number

1228

Hazard Class

3

Packing Group

II; III

HS Code

2930 90 70