2,2-Dimethyl octanoic acid
2,2,3,5-Tetramethylhexanoic acid
2,4-Dimethyl-2-isopropylpentanoic acid
2,5-Dimethyl-2-ethylhexanoic acid
C10H20O2
Molecular mass: 172.3
ICSC # 1699
CAS # 26896-20-8
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
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NO open flames.
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water spray, foam, powder, carbon dioxide
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Explosion
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Above 94°C explosive vapour/air mixtures may be formed.
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Above 94°C use a closed system, ventilation.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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PREVENT GENERATION OF MISTS!
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•Inhalation
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Ventilation.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles
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First rinse with plenty of water (remove contact lenses if easily possible).
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•Ingestion
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Do not eat, drink, or smoke during work.
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Do NOT induce vomiting.
Seek medical attention if you feel unwell.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: filter respirator for organic gases and vapours.
Do NOT let this chemical enter the environment.
Collect leaking liquid in sealable plastic containers.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
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Separated from strong oxidants.
Ventilation along the floor.
Store in an area without drain or sewer access.
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Signal: Warning
May be harmful if swallowed
Causes eye irritation
Harmful to aquatic life
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
Physical Dangers:
Chemical Dangers:
Reacts with strong oxidants, causing fire and explosion hazard.
Attacks metal.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
(p2); Harmful if swallowed. 5.4 Repeated dose toxicity (p17); oral feed causes hepatotoxic changes etc.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration of this substance in the air is reached.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
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If swallowed the substance may cause vomiting, and could result in aspiration pneumonitis.
risk. Viscosity at 20 °C = 45 mm2/s (Test method: ASTM D445)
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
cision based on log Pow
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Physical
Properties
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Boiling point: 243-253°C
Melting point: -39°C
Relative density (water = 1): 0.91
Solubility in water, g/100 ml at 25°C: 0.025
(very poor)
Vapour pressure, Pa at 50°C: 29
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(calculated)
Relative vapour density (air = 1): 5.9
94°C c.c.
Octanol/water partition coefficient as log Pow: 3.6 (calculated)
Viscosity, mm2/s at 20 °C: 45
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Environmental
Data
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The substance is harmful to aquatic organisms.
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N O T E S
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Neodecanoic acid, with CAS number 26896-20-8, includes different isomers. Some are listed under the synonyms.
Health effects of exposure to the substance have not been investigated adequately.
Refer for medical attention if breathing difficulties and/or fever develop.
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ADDITIONAL INFORMATION
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ICSC: 1699
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NEODECANOIC ACID
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(C) IPCS, CEC, 1994
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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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