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Name Valeric acid
CAS 109-52-4
EINECS(EC#) 203-677-2
Molecular Formula C5H10O2
MDL Number MFCD00004413
Molecular Weight 102.13
MOL File 109-52-4.mol

Chemical Properties

Appearance Colorless liquid; penetrating odor and taste. Soluble in water, alcohol and ether. Undergoes reactions typical of normal monobasic organic acids. Combustible.
Melting point  −20-−18 °C(lit.)
Boiling point  110-111 °C10 mm Hg(lit.)
density  0.939 g/mL at 25 °C(lit.)
vapor density  3.5 (vs air)
vapor pressure  0.15 mm Hg ( 20 °C)
FEMA  3101
refractive index  n20/D 1.408(lit.)
Fp  192 °F
storage temp.  Store below +30°C.
solubility  40g/l
form  Liquid
pka 4.84(at 25℃)
color  Clear colorless to pale yellow
Odor at 1.00 % in propylene glycol. sickening putrid acidic sweaty rancid
PH 2.7 (40g/l, H2O, 20℃)
explosive limit 1.8-7.3%(V)
Odor Threshold 0.000037ppm
Odor Type cheesy
Water Solubility  40 g/L (20 ºC)
JECFA Number 90
Merck  14,9904
BRN  969454
Dielectric constant 2.7(20℃)
LogP 1.8 at 25℃
valeric acid is obtained from valerian extract, which is considered skin conditioning.
CAS DataBase Reference 109-52-4(CAS DataBase Reference)
NIST Chemistry Reference Pentanoic acid(109-52-4)
EPA Substance Registry System 109-52-4(EPA Substance)

Safety Data

Hazard Codes  C
Risk Statements 
R34:Causes burns.
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 3265 8/PG 3
WGK Germany  1
RTECS  YV6100000
Autoignition Temperature 707 °F
HazardClass  8
PackingGroup  III
HS Code  29156090
Safety Profile
Moderately toxic by ingestion, intravenous, and subcutaneous routes. Mildly toxic by inhalation. A corrosive irritant to skin, eyes, and mucous membranes. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes. Used in perfumes.
Hazardous Substances Data 109-52-4(Hazardous Substances Data)
LD50 i.v. in mice: 1290 ±53 mg/kg (Or, Wretlind)

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Material Safety Data Sheet(MSDS)

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