Product Identification

Product Name

2-Naphthalenethiol

Synonyms

2-Mercaptonaphthalene
2-Naphthyl mercaptan
2-Thionaphthol
Renacit 1
Vulcamel TBN

CAS

91-60-1

Formula

C10H8S

Molecular Weight

160.24

EINECS

202-082-5

RTECS

QK3930000

RTECS Class

Other

Merck

12,6466

Beilstein/Gmelin

636389

Beilstein Reference

4-06-00-04312

Physical and Chemical Properties

Appearance

Off-white, crystals, powder or lumps, disagreeable sulfurous mushroom odor.

Solubility in water

Insoluble

Melting Point

81

Boiling Point

286

Vapor Pressure

0.005 (25 C)

Density

1.550 g/cm3 (25C)

pKa/pKb

6.64 (pKa)

Partition Coefficient

3.75

Heat Of Vaporization

50.4 kJ/mol

Usage

Used as a flavour additive in food industry.

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with 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.

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 cool, dry place. Store in a tightly closed container.

Handling

Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification

Ingestion

Harmful if swallowed. The toxicological properties of this substance have not been fully investigated.

Inhalation

Harmful if inhaled. The toxicological properties of this substance have not been fully investigated.

Skin

Harmful if absorbed through the skin.

Eyes

May cause eye irritation.

EC Risk Phrase

R 22 36/37/38

EC Safety Phrase

S 26 36/37/39

UN (DOT)

3335

Exposure Controls/Personal Protection

Personal Protection

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.

Fire Fighting Measures

Flash Point

134

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code

6

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Sulfur dioxide, carbon monoxide, carbon dioxide.

Transport Information

UN Number

3335

HS Code

2930 90 70