Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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1,4-Dichloro-2-butyne(821-10-3)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

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
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