Product Identification

Product Name

1,4-Dichloro-2-butyne

Synonyms

1,4-Dichlorobut-2-yne

CAS

821-10-3

Formula

C4H4Cl2

Molecular Weight

122.98

EINECS

212-474-8

RTECS

ER9600000

RTECS Class

Other

Beilstein/Gmelin

635740

Beilstein Reference

4-01-00-00973

EC Class

irritant

Physical and Chemical Properties

Appearance

Clear brown liquid.

Solubility in water

Insoluble

Melting Point

-34.5

Boiling Point

165

Vapor Pressure

2.5 (25 C)

Density

1.2613 g/cm3 (20 C)

Partition Coefficient

1.75

Heat Of Vaporization

38.6 kJ/mol

Refractive Index

1.502 ( C)1

First Aid Measures

Ingestion

Do NOT induce vomiting. 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.

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

Immediately 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

Do not store in direct sunlight. Store in a tightly closed container. Store in a dry area. Refrigerator (approx 4 C).

Handling

Wash thoroughly after handling. Wash hands before eating. Use with adequate ventilation. Avoid breathing dust, vapor, mist, or gas. Do not get on skin or in eyes. Do not ingest or inhale.

Hazards Identification

Inhalation

Causes respiratory tract irritation. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.

Skin

Causes skin irritation.

Eyes

Causes eye irritation. Lachrymator.

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 36/37/38

EC Safety Phrase

S 26 36/37/39

UN (DOT)

1610

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 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

The toxological properties of this substance have not been fully investigated.

Fire Fighting Measures

Flash Point

70

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.

Fire Potential

May burn but not readily ignited.

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.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents and strong bases.

Decomposition

Hydrogen chloride, carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

1610

Hazard Class

6.1

Packing Group

II

HS Code

2903 29 00