Organic Acids
REACH
Pentanoic acid
CAS Number
109-52-4
EC Number
203-677-2
FEMA Number
FEMA 3101
What is Pentanoic acid?
Pentanoic acid (CAS 109-52-4), also known as valeric acid, is a five-carbon saturated carboxylic acid. FEMA 3101.
Where is Pentanoic acid used?
- Food and beverage: flavoring agent and pH regulator contributing dairy and fruity top notes
- Fragrance and organic synthesis: chemical intermediate for esters such as pentyl acetate
- Pharmaceuticals: precursor in the synthesis of valproic acid and other active ingredients
- Industrial settings: catalyst precursor and pH-buffering agent
- It is useful in organic synthesis where controlled acidity is required.
Commercial specifications
- Colorless liquid in bulk quantities, intermediate IBCs, and smaller drum formats
Other Names (Synonyms)
Valeric acid
What are the physical properties of Pentanoic acid?
Melting Point -34.5 °C
Boiling Point 186-187 °C
Density 0.939 g/cm³ @ Temp: 20 °C
Flash Point 192 °F
Appearance Colorless liquid; penetrating odor and taste. Soluble in water, alcohol and ether. Undergoes reactions typical of normal monobasic organic acids. Combustible.
Color Clear colorless to pale yellow
Odor at 1.00 % in propylene glycol. sickening putrid acidic sweaty rancid
Form Liquid
Water Solubility 40 g/L (20 ºC)
Vapor Pressure 0.15 mm Hg ( 20 °C)
Refractive Index n 20/D 1.408(lit.)
pH 2.7 (40g/l, H2O, 20℃)
Log P 1.8 at 25℃
How is Pentanoic acid classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant GHS06· Toxic
Hazard Statements
H227 Combustible liquid
H302 Harmful if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
Which trade and regulatory codes apply to Pentanoic acid?
HS Code 29156090
UN Number 3265
ADR Class 8
Packing Group III
Storage Class 8A - Combustible corrosive hazardous materials
WGK (Germany) 1