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Name Isovaleric acid
CAS 503-74-2
EINECS(EC#) 207-975-3
Molecular Formula C5H10O2
MDL Number MFCD00002726
Molecular Weight 102.13
MOL File 503-74-2.mol

Chemical Properties

Appearance clear colorless to slightly yellow liquid
Melting point  -29 °C (lit.)
Boiling point  175-177 °C (lit.)
density  0.926
vapor pressure  0.38 mm Hg ( 20 °C)
FEMA  3102
refractive index  n20/D 1.403(lit.)
Fp  159 °F
storage temp.  Store below +30°C.
solubility  48g/l
form  Liquid
pka 4.77(at 25℃)
color  Clear colorless to slightly yellow
Specific Gravity 0.928 (20/20℃)
Odor at 1.00 % in propylene glycol. sour stinky feet sweaty cheese tropical
PH 3.1 (10g/l, H2O, 25℃)
explosive limit 1.5-6.8%(V)
Odor Type cheesy
Water Solubility  25 g/L (20 ºC)
JECFA Number 259
Merck  14,5231
BRN  1098522
Dielectric constant 2.6(20℃)
LogP 1.7 at 25℃
CAS DataBase Reference 503-74-2(CAS DataBase Reference)
NIST Chemistry Reference Butanoic acid, 3-methyl-(503-74-2)
EPA Substance Registry System 503-74-2(EPA Substance)

Safety Data

Hazard Codes  C,T
Risk Statements 
R34:Causes burns.
R24:Toxic in contact with skin.
R22:Harmful if swallowed.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S38:In case of insufficient ventilation, wear suitable respiratory equipment .
RIDADR  UN 3265 8/PG 2
WGK Germany  1
RTECS  NY1400000
Autoignition Temperature 824 °F
HazardClass  6.1
PackingGroup  III
HS Code  29156000
Hazardous Substances Data 503-74-2(Hazardous Substances Data)
LD50 i.v. in mice: 1120±30 mg/kg (Or, Wretlind)

Hazard Information

Material Safety Data Sheet(MSDS)

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