Determine the necessary mass, volume, or concentration for preparing a solution.
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Slight special smell, strong astringency, dark color in exposed light and air. Soluble in water, soluble in ethanol, acetone and glycerol, almost insoluble in ether, benzene, chloroform and petroleum ether. Slight special smell, with strong astringency.
Light yellow amorphous powder or loose glossy scaly or spongy solid, most of them decompose into pyrogallic acid and carbon dioxide at 210-215 ℃. 1G in 0.35ml water and 1ml hot glycerin. Odorless, flammable. When it comes to albumin, starch, gelatin and many alkaloids and metal salts, it will precipitate. When it comes to iron salts, it will also produce black or precipitate. The spontaneous combustion point was 526.6 ℃, and the median lethal dose (rabbit, oral) was 5.0 g / kg.
Tannin is not a single compound, and its chemical composition is complex
① Condensed tannin is a kind of flavanol. The 2-position of flavanol in the molecule combines with catechol or pyrogallol through carbon carbon bond.
② Hydrolyzable tannin, with ester bond in molecule, is gallate of glucose. The latter is commonly used tannin. The tannin obtained from gallnut of China contains about 12% glucose, and the tannin obtained from gallnut of Turkey contains about 16.5% glucose.
Precipitation and gravimetric determination of be, Al, GA, in, Nb, Ta and Zr. Determination of copper, iron, vanadium, cerium and cobalt. It is a precipitant of protein and alkaloid. External indicator for titration of lead with ammonium molybdate. Dyes, mordants.
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Spezifikationsblatt ansehen →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Phenylpropanoids and polyketides |
| Klasse | Tannins |
| Subclass | Hydrolyzable tannins |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Hydrolyzable tannins |
| Alternative Parents | Depsides and depsidones Galloyl esters p-Hydroxybenzoic acid alkyl esters m-Hydroxybenzoic acid esters Phenol esters Pyrogallols and derivatives Phenoxy compounds Benzoyl derivatives Catechols 1-hydroxy-2-unsubstituted benzenoids 1-hydroxy-4-unsubstituted benzenoids Oxanes Monosaccharides Carboxylic acid esters Oxacyclic compounds Acetals Polyols Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteromonocyclic compounds |
| Substituents | Hydrolyzable tannin - Depside backbone - Galloyl ester - Gallic acid or derivatives - P-hydroxybenzoic acid alkyl ester - M-hydroxybenzoic acid ester - P-hydroxybenzoic acid ester - Dihydroxybenzoic acid - Phenol ester - Benzoate ester - Benzenetriol - Benzoic acid or derivatives - Pyrogallol derivative - Phenoxy compound - Catechol - Benzoyl - Phenol - 1-hydroxy-4-unsubstituted benzenoid - 1-hydroxy-2-unsubstituted benzenoid - Monosaccharide - Oxane - Benzenoid - Monocyclic benzene moiety - Carboxylic acid ester - Polyol - Acetal - Carboxylic acid derivative - Organoheterocyclic compound - Oxacycle - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organooxygen compound - Aromatic heteromonocyclic compound |
| Beschreibung | This compound belongs to the class of organic compounds known as hydrolyzable tannins. These are tannins with a structure characterized by either of the following models. In model 1, the structure contains galloyl units (in some cases, shikimic acid units) that are linked to diverse polyol carbohydrate-, catechin-, or triterpenoid units. In model 2, contains at least two galloyl units C-C coupled to each other, and do not contain a glycosidically linked catechin unit. |
| External Descriptors | tannin |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Datum | Artikel |
|---|---|---|---|
| Certificate of Analysis | Sep 22, 2026 | T308008 | |
| Certificate of Analysis | Sep 01, 2026 | T308008 | |
| Certificate of Analysis | Sep 01, 2026 | T308008 | |
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| Certificate of Analysis | Jan 10, 2025 | T308008 | |
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| Certificate of Analysis | Oct 29, 2022 | T308008 | |
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| Certificate of Analysis | Jul 26, 2022 | T308008 | |
| Certificate of Analysis | Jun 15, 2022 | T308008 | |
| Certificate of Analysis | Jun 15, 2022 | T308008 | |
| Certificate of Analysis | Mar 10, 2022 | T308008 | |
| Certificate of Analysis | Apr 17, 2021 | T308008 |
| Löslichkeit | Soluble in water, warm glycerol, alcohol and acetone. |
|---|---|
| Empfindlichkeit | Air & Light Sensitive |
| Flammpunkt (°F) | 390.2 °F |
| Flammpunkt (°C) | 199 °C |
| Schmelzpunkt (°C) | 210-215°C |
| Molekulargewicht | 1701.200 g/mol |
| XLogP3 | 6.200 |
| Hydrogen Bond Donor Count | 25 |
| Hydrogen Bond Acceptor Count | 46 |
| Rotatable Bond Count | 31 |
| Exact Mass | 1700.17 Da |
| Monoisotopic Mass | 1700.17 Da |
| Topological Polar Surface Area | 778.000 Ų |
| Heavy Atom Count | 122 |
| Formal Charge | 0 |
| Complexity | 3570.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 5 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
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