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| CAFFEIC ACID | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 331-39-5 |
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| EINECS NO. | 206-361-2 | |
| FORMULA | C9H8O4 | |
| MOL WT. | 180.16 | |
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H.S. CODE |
2916.39 | |
| DERIVATION |
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TOXICITY |
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| SYNONYMS | 3,4-Dihydroxy-cinnamic acid; trans-Caffeate; | |
| 3,4-Dihydroxy-trans-cinnamate; (E)-3-(3,4-dihydroxyphenyl)-2-propenoic acid; 3,4-Dihydroxybenzeneacrylicacid; 3-(3,4-Dihydroxyphenyl)-2-propenoic acid; | ||
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CLASSIFICATION |
CARBOCYCLIC CARBOXYLIC ACIDS / | |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | yellow crystals | |
| MELTING POINT | 223 - 225 C (Decomposes) | |
| BOILING POINT | ||
| SPECIFIC GRAVITY | ||
| SOLUBILITY IN WATER | soluble in hot water (soluble in alcohol) | |
| pH | ||
| VAPOR DENSITY |
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| AUTOIGNITION |
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| NFPA RATINGS | Health: 2; Flammability: 0; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT | ||
| STABILITY |
Stable under ordinary conditions |
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| GENERAL DESCRIPTION & APPLICATIONS | ||
| Caffeic acid is a non-nitrogenous acid found in various plants as a metabolite product in nature. It is related to cinnamic acid. But it has two hydroxyl groups which is not found in cinnamic acid. Caffeic acid is not related to caffeine. Chlorogenic acid is the ester of caffeic acid with the 3-hydroxyl group of quinic acid. Caffeic acid is known as a naturally occuring phenolic acid which acts as a carcinogenic inhibitor. It is also known as an antioxidant in vitro and therefore contribute to the prevention of cardiovascular disease. Caffeic acid and its derivatives are used as a component of antimitogenic, anticarcinogenic, anti-inflamatory, and immunomodulator. In biological chemistry, cinnamic acid is a key intermediate in shikimate and phenylpropanoid pathways. Shikimic acid is a precursor of many alkaloids, aromatic amino acids, and indole derivatives. Phenylpropanoid are a class of plant metabolites based on phenylalanine. They are widely distributed in plants fulfilling many functions including plant defense mechanism, pigmentation and external signaling system. Phenylalanine is first converted to cinnamates, coumarines, caffeic acids, ferulic acids, and sinapic acids. Cinnamic acid is the precursor of these acids. Cinnamic acid is the parent compound of its esters which are more volatile to be transported to other parts easily. Commercial cinnamic acid, a phenylacrylic acid structure compound, is used in converting to its esters such as methyl, ethyl, and benzyl cinnamate for the perfume and flavour application. Cinnamic acid and Its derivatives including esters and carboxylic functional derivatives are used as important components in flavours, perfumes, synthetic indigo and pharmaceuticals. Cinnamate can act as optical filters or deactivate substrate molecules that have been excited by light for the protection polymers and organic substances. They, cosmetic grades, are used as sunscreen agents to reduce skin damage by blocking UV-A, B. Cinnamic acid is an odorless white crystalline powder; slightly soluble in water; melting point 133 C and boiling point 300 C. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
yellow crystals | |
| ASSAY |
98.5% min |
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| MELTING POINT | 223 - 225 C | |
| TRANSPORTATION | ||
| PACKING |
25kgs
in fiber drum
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| HAZARD CLASS | ||
| UN NO. | ||
| OTHER INFORMATION | ||
| Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 24/25 | ||
| PRICES | ||
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