2-METHYL-1-PENTENE

Diamond	Hazard	Value	Description
3 1 0	Health	1	Can cause significant irritation.
	Flammability	3	Can be ignited under almost all ambient temperature conditions.
	Instability	0	Normally stable, even under fire conditions.
	Special

Colorless liquid. Flash point -15°F. Floats on water. Irritating vapor.

• Highly Flammable
• Polymerizable

Highly flammable. Insoluble in water.

Behavior in Fire: Can react vigorously with oxidizing materials. (USCG, 1999)

INHALATION: May produce anesthetic effects. EYES: Moderate eye irritation possible. (USCG, 1999)

2-METHYL-1-PENTENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions.

• Hydrocarbons, Aliphatic Unsaturated
• Polymerizable Compounds

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Mineral-Based & Clay-Based Absorbents
• Dirt/Earth

Excerpt from 128 [Flammable Liquids (Water-Immiscible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Fire Extinguishing Agents Not to Be Used: Water may be ineffective.

Fire Extinguishing Agents: Foam, carbon dioxide, dry chemical. (USCG, 1999)

Excerpt from 128 [Flammable Liquids (Water-Immiscible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2020)

Rubber or neoprene gloves, splash goggles and NIOSH approved self-contained breathing apparatus. (USCG, 1999)

No information available.

Call a doctor.

INHALATION: Remove from contaminated atmosphere. If respiration is labored, administer oxygen. If unconscious, administer artificial respiration.

EYES: Flush with clear tap water for 15 min.

SKIN: Wash with soap and water.

INGESTION: Do not induce vomiting. Physician may remove by cuffed tube lavage. (USCG, 1999)

• ISO-HEXENE
• 2-METHYL PENTENE-1
• 2-METHYL-1-PENTENE
• 1-METHYL-1-PROPYLETHYLENE
• 4-METHYL-4-PENTENE