CAFTARIC ACID

Synonyms. Caftaric Acid; Monocaffeyltartaric acid; trans-Caftaric acid; 2-Caffeoyl-L-tartaric acid; (R-(R',R'-(E)))-2-(3-(3,4-Dihydroxyphenyl)-1-oxo-2-propenyl)-3-hydroxybutanedioic acid;

CAFTARIC ACID

Click for original image

 

PRODUCT IDENTIFICATION

CAS RN

67879-58-7

EINECS RN

 

FORMULA

C13H12O9

MOLE WEIGHT

312.23

H.S CODE

 2918.99.4300

SMILES

 C([C@@H]([C@H](C(=O)O)O)OC(\C=C\c1cc(c(cc1)O)O)=O)(=O)O

CLASSIFICATION

Hydroxycinnamic acid

EXTRA NOTES

Other RN: 72880-50-3

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE.

white to off-white crystalline powder

MELTING POINT

124 ~ 125 C

BOILING POINT

 

DENSITY

 

SOLUBILITY IN WATER

 

SOLVENT SOLUBILITY

 

VAPOR DENSITY

 

log P(octanol-water)

  

VAPOR PRESSURE

  

AUTOIGNITION TEMP

  
pK

 

REFRACTIVE INDEX

 

FLASH POINT

 

 

STABILITY AND REACTIVITY
STABILITY Stable under normal conditions.

INCOMPATIBLE MATERIALS

Strong oxidizing agents

POLYMERIZATION

Has not been reported

NFPA RATINGS

Health: 1, Flammability: 0, Reactivity: 0

 

EXTERNAL LINKS & GENERAL DESCRIPTION

USA.gov - Caftaric Acid

Wikipedia Linking - Caftaric Acid

Google Scholar Search - Caftaric Acid

U.S. National Library of Medicine - Caftaric Acid

PubChem Compound Summary - Caftaric Acid

http://www.ncbi.nlm.nih.gov/ -  Caftaric Acid

http://www.sigmaaldrich.com/
Application: Caftaric acid has been used in a study that evaluated the myelopoietic effect on bone marrow of rats treated with various Echinacea purpurea extracts. Caftaric acid has also been used in a study that identified (poly)phenolic compounds in concord grape juice and their metabolites in human plasma and urine after juice consumption.

http://www.calwineries.com/
The Role of Caftaric Acid in Wine: Caftaric acid is a nonflavanoid that impacts the color of white wine. Many beleive this molecule is responsible for the yellowish-gold color seen in some whites. Cafteric Acid and Caffeic Acid are a class of chemicals known as Cinnamates. Cafteric Acid is formed when Cafferic Acid and Tartaric Acid undergo esterification. But during fermentation, Cafteric Acid is oxidized into its principle components. Winemakers primarily use Cafteric Acid to measure the oxidation levels that a wine has undergone. Press Wines, which undergo a high degree of oxidation will have little to no Cafteric Acid. This one of the primary methods that winemakers can monitor this harmful process.

 

SALES SPECIFICATION

APPEARANCE

white powder

ASSAY

98% min

MELTING POINT

124 ~ 125 C

LOSS ON DRYING

1% max

HEAVY METALS

10ppm max

 

TRANSPORT & REGULATORY INFORMATION

UN NO.

 

HAZARD CLASS

 

PACKING GROUP  

 

SAFETY INFORMATION

HAZARD OVERVIEW

GHS (Globally Harmonised System) Classification: Not a dangerous substance. Potential Health Effects: Eyes - May cause eye irritation. Skin - May be harmful if absorbed through skin May cause skin irritation. Inhalation - May be harmful if inhaled. May cause respiratory tract irritation. Ingestion - May be harmful if swallowed.

HAZARD CODES

 

RISK PHRASES

 

SAFETY PHRASES

 

 

PACKING

Preserved in light-resistant and well-closed bottles