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NIOSH

2-METHYLPENTANE

ICSC: 1262

Isohexane
Dimethylpropylmethane
C6H14 / CH3CH(CH3)(CH2)2CH3
Molecular mass: 86.2
ICSC # 1262 		CAS # 107-83-5
RTECS # SA2985000
UN # 1208 (hexanes)
March 15, 1995 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Powder , foam , carbon dioxide .
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION
Ventilation, local exhaust, or breathing protection.
Fresh air, rest.
•SKIN
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer.
Fireproof. Separated from strong oxidants.

UN Hazard Class: 3
UN Packing Group: II
ICSC: 1262 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

2-METHYLPENTANE

ICSC: 1262

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A

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D

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T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible. As a result of flow, agitation, etc., electrostatic charges can be generated.

CHEMICAL DANGERS:
Reacts violently with oxidants causing fire and explosion hazard. Attacks plastic.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as hexane isomers) 500 ppm as TWA; 1000 ppm as STEL; (ACGIH 2008).
MAK: (as hexane isomers) 500 ppm, 1800 mg/m3;
Peak limitation category: II(2); Pregnancy risk group: D;
(DFG 2008).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and through the skin.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 60°C
Melting point: -153°C
Relative density (water = 1): 0.65
Solubility in water: none
Vapour pressure, kPa at 20°C: 23
Relative vapour density (air = 1): 3.0
Flash point: -32°C c.c.
Auto-ignition temperature: 264°C
Explosive limits, vol% in air: 1.0-7

ENVIRONMENTAL
DATA


N O T E S

Transport Emergency Card: TEC (R)-30S1208 or 30GF1-I+II
NFPA Code: H1; F3; R0;
Card has been partially updated in April 2005: see Emergency Response.
Card has been partially updated in February 2009: see Occupational Exposure Limits,

ADDITIONAL INFORMATION



ICSC: 1262 2-METHYLPENTANE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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