Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More
Learn More
ALADDIN SCIENTIFIC CORPORATION Tannic acid, 25g
Supplier: ALADDIN SCIENTIFIC CORPORATION T29228825G
Slightly special smell strong astringency exposure to light and deep color change in the air Soluble in water easily soluble in ethanol acetone and glycerol almost insoluble in ether benzene chloroform and petroleum ether Slightly special smell and strong astringency Pale yellow amorphous powder or loose shiny scaly or spongy solid which is mostly decomposed into pyrogallic acid and carbon dioxide at 210-215degC 1g is dissolved in 0 35ml water and 1ml hot glycerin It is odorless and flammable When exposed to albumin starch gelatin and many alkaloids and metal salts they precipitate and when exposed to iron salts they also produce black or precipitate Autoignition point 526 6degC The median lethal dose (LD) (rabbit oral) was 5 0g/kg Tannin is not a single compound but its chemical composition is complex and can be roughly divided into two types-(1) condensed tannin is flavanol and the 2-position of flavanol in the molecule is combined with catechol or phloroglucinol through carbon
Product Content Correction
The Fisher Scientific Encompass Program offers items which are not part of our distribution portfolio. These products typically do not have pictures or detailed descriptions. However, we are committed to improving your shopping experience. Please use the form below to provide feedback related to the content on this product.
Product Title
Spot an opportunity for improvement?Share a Content Correction