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NIOSH

CYCLOHEXANONE

ICSC: 0425

Ketohexamethylene
Pimelic ketone
Cyclohexyl ketone
C6H10O
Molecular mass: 98.14
ICSC # 0425 		CAS # 108-94-1
RTECS # GW1050000
UN # 1915
EC # 606-010-00-7
April 21, 2004 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Alcohol-resistant foam , carbon dioxide , powder .
EXPLOSION Above 44°C explosive vapour/air mixtures may be formed.
Above 44°C use a closed system, ventilation, and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding).
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION Cough. Sore throat. Dizziness. Drowsiness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN MAY BE ABSORBED! Dry skin. Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Redness. Pain.
Safety goggles, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Abdominal pain. Burning sensation.
Do not eat, drink, or smoke during work.
Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Chemical protection suit. Remove all ignition sources. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Fireproof. Separated from strong oxidants.

Xn symbol
R: 10-20
S: 2-25
UN Hazard Class: 3
UN Packing Group: III
ICSC: 0425 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.

CYCLOHEXANONE

ICSC: 0425

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

PHYSICAL DANGERS:
The vapour is heavier than air. As a result of flow, agitation, etc., electrostatic charges can be generated.

CHEMICAL DANGERS:
Reacts with strong oxidants such as nitric acid causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 20 ppm as TWA; 50 ppm as STEL; (skin); A3; (ACGIH 2004).
EU OEL: 10 ppm, 40.8 mg/m3 as TWA; 20 ppm, 81.6 mg/m3 as STEL; (skin); (EU 2000).
OSHA PEL†: TWA 50 ppm (200 mg/m3)
NIOSH REL: TWA 25 ppm (100 mg/m3) skin
NIOSH IDLH: 700 ppm See: 108941


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

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance and the vapour is irritating to the eyes , the skin and the respiratory tract . Exposure far above the OEL could cause lowering of consciousness.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 156°C
Melting point: -32.1°C
Relative density (water = 1): 0.95
Solubility in water, g/100 ml at 20°C: 8.7
Vapour pressure, Pa at 20°C: 500
Relative vapour density (air = 1): 3.4
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 44°C c.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 1.1 (at 100°C) -9.4
Octanol/water partition coefficient as log Pow: 0.81
Electrical conductivity (NOT on card): 50000pS/m

ENVIRONMENTAL
DATA


N O T E S

Transport Emergency Card: TEC (R)-30S1915
.
NFPA Code: H1; F2; R0;
Card has been partially updated in July 2007: see Occupational Exposure Limits, Ingestion First Aid, Spillage Disposal.

ADDITIONAL INFORMATION



ICSC: 0425 CYCLOHEXANONE
(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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