Organic Acids
REACH
trans-Crotonic acid
CAS Number
107-93-7
EC Number
203-533-9
FEMA Number
FEMA 3908
What is trans-Crotonic acid?
Trans-Crotonic acid (CAS 107-93-7) is an unsaturated organic acid used as a flavoring agent and acidulant in food and cosmetic applications. FEMA 3908.
Where is trans-Crotonic acid used?
- Food and beverage: flavor modulation and mild acidulant activity
- Cosmetics and personal care: film-forming polymers and fixative resins for hair care, providing controlled hold and flexibility
- Industrial coatings: copolymerizable monomer modifying resin hardness, adhesion and film durability
- Polymer synthesis: pH regulator, preservative component and reactive monomer for coating and adhesive systems
- Preservation systems: buffering capacity supports pH control and antimicrobial efficacy
Good to know: Recognized under its FEMA code for use in approved flavoring compositions.
Commercial specifications
- Packaging in kilogram quantities for specialty use and larger bulk formats
Other Names (Synonyms)
trans-2-butenoic acid|Butenoic Acid|(E)-but-2-enoic acid|(2E)-2-butenoic acid|beta-methylacrylic acid|beta-methacrylic acid|alpha-crotonic acid|alpha-butenoic acid
What are the physical properties of trans-Crotonic acid?
Melting Point 72 °C
Boiling Point 185 °C
Density 1.027 g/mL at 25 °C(lit.)
Flash Point 190 °F
Appearance White to light yellow crystalline flakes
Color White to light yellow
Odor at 1.00 %. milky
Form Crystalline Flakes
Water Solubility 94 g/L (25 ºC)
Vapor Pressure 0.19 mm Hg ( 20 °C)
Refractive Index 1.4228
pH 3 (10g/l, H2O, 20℃)
Log P 0.85 at 25℃
How is trans-Crotonic acid classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant GHS06· Toxic
Hazard Statements
H302 Harmful if swallowed
H311 Toxic in contact with skin
H312 Harmful in contact with skin
H314 Causes severe skin burns and eye damage
Precautionary Statements
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.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to trans-Crotonic acid?
HS Code 29161940
UN Number 2823
ADR Class 8
Packing Group III
Storage Class 8A - Combustible corrosive hazardous materials
WGK (Germany) 3