ICSC 1773 - 2,2-DIMETHYLPROPANE

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2,2-DIMETHYLPROPANE	ICSC: 1773 (April 2014)
Tetramethylmethane tert-Pentane Neopentane 1,1,1-Trimethylethane

CAS #: 463-82-1

UN #: 2044

EC Number: 207-343-7

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Extremely flammable. Gas/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting.	Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with powder, foam, carbon dioxide. In case of fire: keep cylinder cool by spraying with water.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Drowsiness. Headache.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again.
Eyes	ON CONTACT WITH LIQUID: FROSTBITE.	Wear safety goggles or eye protection in combination with breathing protection.	Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention.
Ingestion

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Remove all ignition sources. Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Shut off cylinder if possible. Isolate the area until the gas has dispersed. Remove gas with fine water spray.	According to UN GHS Criteria DANGER Extremely flammable gas Contains gas under pressure; may explode if heated May cause drowsiness or dizziness Transportation UN Classification UN Hazard Class: 2.1
STORAGE
Fireproof. Cool.
PACKAGING

2,2-DIMETHYLPROPANE

ICSC: 1773

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS COMPRESSED GAS WITH CHARACTERISTIC ODOUR. Physical dangers The gas is heavier than air and may travel along the ground; distant ignition possible. The gas mixes well with air, explosive mixtures are easily formed. Chemical dangers Reacts with strong oxidants.	Formula: C₅H₁₂ Molecular mass: 72.2 Boiling point: 9.5°C Melting point: -16.6°C Density (at 20°C): 0.61 g/cm³ Flash point: <-7°C Auto-ignition temperature: 450°C Explosive limits, vol% in air: 1.3 - 7.5 Solubility in water: none Vapour pressure, kPa at 20°C: 146 Relative vapour density (air = 1): 2.5 Octanol/water partition coefficient as log Pow: 3.11

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS COMPRESSED GAS WITH CHARACTERISTIC ODOUR.

Physical dangers
The gas is heavier than air and may travel along the ground; distant ignition possible. The gas mixes well with air, explosive mixtures are easily formed.

Chemical dangers
Reacts with strong oxidants.

Formula: C₅H₁₂
Molecular mass: 72.2
Boiling point: 9.5°C
Melting point: -16.6°C
Density (at 20°C): 0.61 g/cm³
Flash point: <-7°C
Auto-ignition temperature: 450°C
Explosive limits, vol% in air: 1.3 - 7.5
Solubility in water: none
Vapour pressure, kPa at 20°C: 146
Relative vapour density (air = 1): 2.5
Octanol/water partition coefficient as log Pow: 3.11

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure Inhalation of high concentrations of the gas may cause depression of the central nervous system. Rapid evaporation of the liquid may cause frostbite.	Inhalation risk On loss of containment, a harmful concentration of this gas in the air will be reached very quickly, especially in confined spaces. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
Inhalation of high concentrations of the gas may cause depression of the central nervous system. Rapid evaporation of the liquid may cause frostbite.

Inhalation risk
On loss of containment, a harmful concentration of this gas in the air will be reached very quickly, especially in confined spaces.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 1000 ppm as TWA. MAK: 3000 mg/m³, 1000 ppm; peak limitation category: II(2); pregnancy risk group: C. EU-OEL: 3000 mg/m³, 1000 ppm as TWA

ENVIRONMENT

NOTES
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area.

ADDITIONAL INFORMATION

EC Classification
Symbol: F+, N; R: 12-51/53; S: (2)-9-16-33-61

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