Product Identification

Product Name

2-Bromo-5-methylthiophene

Synonyms

5-Bromo-2-methylthiophene
5-Methyl-2-bromothiophene

CAS

765-58-2

Formula

C5H5BrS

Molecular Weight

177.06

EINECS

212-151-1

Physical and Chemical Properties

Appearance

Colorless liquid.

Solubility in water

0.39 g/L (20 C)

Melting Point

58

Boiling Point

178

Vapor Pressure

1.5 (25 C)

Density

1.5529 g/cm3 (20 C)

Partition Coefficient

3.21

Heat Of Vaporization

39.60 kJ/mol

Refractive Index

1.5673 (20^oC)

Handling and Storage

Storage

Keep tightly closed. Keep away from heat and open flame. Refrigerate on arrival. Store at 2-8 C

Hazards Identification

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water. 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.

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Hazards

Emits toxic fumes under fire conditions.

UN (DOT)

1993

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.

Respirators

Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.

Fire Fighting Measures

Flash Point

78

Fire Fighting

For small (incipient) fires, use media such as 'alcohol' foam, dry chemical, or carbon dioxide. For large fires, apply water from as far as possible. Use very large quantities (flooding) of water applied as a mist or spray; solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

Combustible liquid.

Accidental Release Measures

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 and Reactivity

Stability

Stable if stored as directed.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, Carbon dioxide, Sulfur oxides, Hydrogen bromide gas.

Transport Information

UN Number

1993

Hazard Class

3

Packing Group

III