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trans-Cinnamic acid(CAS#140-10-3)

Chemical Property:

Molecular Formula C9H8O2
Molar Mass 148.16
Density 1.248
Melting Point 133 °C (lit.)
Boling Point 300°C(lit.)
Flash Point >230°F
Water Solubility 0.4 g/L (20 ºC)
Solubility Soluble in ethanol, methanol, petroleum ether, chloroform, easily soluble in benzene, ether, acetone, glacial acetic acid, carbon disulfide and oils, slightly soluble in water.
Vapor Presure 1.3 hPa (128 °C)
Appearance White powder
Specific Gravity 0.91
Color White to almost white
Odor Faint odour
Maximum wavelength(λmax) ['273nm(MeOH)(lit.)']
Merck 14,2299
BRN 1905952
pKa 4.44(at 25℃)
PH 3-4 (0.4g/l, H2O, 20℃)
Storage Condition 2-8°C
Sensitive Easily absorbing moisture
Refractive Index 1.5049 (estimate)
MDL MFCD00004369
Physical and Chemical Properties Trait: white monoclinic prism. There is a micro cinnamon aroma.
density 1.248
melting point 135~136 ℃
boiling point 300 ℃
relative density 1.2475
soluble in ethanol, methanol, petroleum ether, chloroform, soluble in benzene, ether, acetone, acetic acid, carbon disulfide and oil, insoluble in water.
Use Is the preparation of esters, spices, medicine raw materials

Product Detail

Product Tags

Hazard Symbols Xi – Irritant
Risk Codes 36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 – Wear suitable protective clothing.
S37/39 – Wear suitable gloves and eye/face protection
WGK Germany 1
RTECS GD7850000
TSCA Yes
HS Code 29163900
Toxicity LD50 orally in Rabbit: 2500 mg/kg LD50 dermal Rabbit > 5000 mg/kg

 

Introduction

Trans-cinnamic acid is an organic compound. It exists in the form of white crystals or crystalline powders.

 

Trans-cinnamic acid is solid at room temperature and can be dissolved in alcohols, ethers and acid solvents, and slightly soluble in water. It has a special aromatic aroma.

 

Trans-cinnamic acid has a variety of uses.

 

The preparation method of trans-cinnamic acid can be obtained by the reaction of benzaldehyde and acrylic acid. Commonly used preparation methods include oxidation reaction, acid-catalyzed reaction and alkaline catalytic reaction.

For example, avoid direct contact with the skin and eyes to avoid irritation and inflammation. When operating, appropriate protective equipment should be used, such as laboratory gloves, protective glasses, etc. Trans-cinnamic acid should be properly stored to avoid contact with ignition sources and oxidants to prevent fire and explosion accidents. During use, operate in accordance with the correct process and operating specifications to ensure safety.


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