Section 1: Product Identification
Chemical Name: t-Butylmethylacetylene, min. 98%
CAS Registry Number: 999-78-0
Formula: C4H9C=C(CH3)
EINECS Number: none
Chemical Family: organic compound
Synonym: 4,4-Dimethyl-pent-2-yne
Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title compound 999-78-0 100% no data no data
Section 3: Hazards Identification
Emergency Overview: May be irritating to skin, eyes and respiratory tract. May be harmful if swallowed.
Primary Routes of Exposure: Ingestion, skin, eyes
Eye Contact: May cause slight to mild irritation of the eyes.
Skin Contact: May cause slight to mild irritation of the skin.
Inhalation: May be irritating to the nose, mucous membranes and respiratory tract.
Ingestion: No specific information is available on the physiological effects of ingestion.
Acute Health Affects: May be irritating to skin, eyes and respiratory tract. May be harmful if swallowed.
Chronic Health Affects: No information available on long-term chronic effects.
NTP: No
IARC: No
OSHA: No
SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with soap and water. Remove contaminated clothes if necessary. Seek medical
Skin Exposure:
assistance if irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.
SECTION 5: Fire Fighting Measures
Flash Point: 14°F
Autoignition Temperature: no data
Explosion Limits: no data
Extinguishing Medium: carbon dioxide, dry powder or foam
If involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure self-contained
Special Fire Fighting Procedures:
breathing apparatus and full protective clothing.
Hazardous Combustion and If involved in a fire this material may emit toxic organic fumes, carbon monoxide and carbon dioxide.
Decomposion Products:
Unusual Fire or Explosion Hazards: Highly flammable liquid. Formation of explosive air/vapor mixtures is possible.
SECTION 6: Accidental Release Measures
Small spills can be mixed with vermiculite, sodium carbonate or other suitable non combustible adsorbent and
Spill and Leak Procedures:
swept up.
SECTION 7: Handling and Storage
Handling and Storage: Store the material in a cool, dry, well ventilated place in a tightly sealed container.
SECTION 8: Exposure Controls and Personal Protection
Eye Protection: Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection: Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.
Ventilation: If possible, handle the material in an efficient fume hood.
If ventilation is not available, a respirator should be worn. The use of respirators requires a Respiratory
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: If possible, handle the material in an efficient fume hood.
Additional Protection: No additional protection required.
SECTION 9: Physical and Chemical Properties
Color and Form: Colorless liquid
Molecular Weight: 96.17
Melting Point: no data
Boiling Point: 83°C
Vapor Pressure: no data
Specific Gravity: no data
Odor: not determined
Solubility in Water: insoluble
SECTION 10: Stability and Reactivity
Stability: air and moisture stable
Hazardous Polymerization: No hazardous polymerization
Conditions to Avoid: contact with ignition sources including open flame and electrostatic discharge.
Incompatibility: strong oxidizing agents and halogens
Decomposition Products: carbon monoxide, carbon dioxide and organic fumes
SECTION 11: Toxicological Information
RTECS Data: No information available in the RTECS files.
Carcinogenic Effects: No data
Mutagenic Effects: No data
Tetratogenic Effects: No data
SECTION 12: Ecological Information
Ecological Information: No information available
SECTION 13: Disposal Considerations
Disposal: Dispose of according to federal, state and local regulations.
SECTION 14: Transportation
Shipping Name (CFR): Flammable liquids, N.O.S.
Hazard Class (CFR): 3
Additional Hazard Class (CFR): NA
Packaging Group (CFR): II
UN ID Number (CFR): UN# 1993
Shipping Name (IATA): Flammable liquid, N.O.S.
Hazard Class (IATA): 3
Additional Hazard Class (IATA): NA
Packaging Group (IATA): II
UN ID Number (IATA): UN# 1993
SECTION 15: Regulatory Information
TSCA: Not listed in the TSCA inventory
SARA (Title 313): Title compound not listed
Second Ingredient: none
SECTION 16 - ADDITIONAL INFORMATION
N/A
