Tannic acid
- CAS No.
- 1401-55-4
- Chemical Name:
- Tannic acid
- Synonyms
- Tannins;Gallotannin;Glycerite;Galloylglucose;tannic;Tannin acid;Gallotannic acid;abcolsumack19;abcoltannicacidtech;acaciamollissimatannin
- CBNumber:
- CB3116328
- Molecular Formula:
- C76H52O46
- Molecular Weight:
- 1701.2
- MOL File:
- 1401-55-4.mol
- Modify Date:
- 2025/3/10 17:18:44
| Melting point | 218 °C (lit.) |
|---|---|
| Boiling point | 862.78°C (rough estimate) |
| Density | 1.2965 (rough estimate) |
| refractive index | 1.7040 (estimate) |
| FEMA | 3042 | TANNIC ACID (QUERCUS SPP.) |
| Flash point | 198°C |
| storage temp. | Storage temperature: no restrictions. |
| solubility | ethanol: soluble100mg/mL, yellow to brown |
| form | Powder/Solid |
| color | Yellow to light brown |
| PH | 3.5 (100g/l, H2O, 20°C) |
| Odor | Slight in solution, typical tannic acid |
| biological source | synthetic |
| Water Solubility | 250 g/L (20 ºC) |
| Sensitive | Air & Light Sensitive |
| Merck | 14,9052 |
| BRN | 8186396 |
| Stability | Stable. Incompatible with metallic salts, strong oxidizing agents, iron and other heavy metals. |
| InChIKey | LRBQNJMCXXYXIU-PPKXGCFTSA-N |
| LogP | 13.327 (est) |
| IARC | 3 (Vol. 10, Sup 7) 1987 |
| EPA Substance Registry System | Tannic acid (1401-55-4) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H303 | |||||||||
| Precautionary statements | P270-P301+P312-P403-P501c | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 40-62-63-68-36/37/38-52/53 | |||||||||
| Safety Statements | 24/25-36-26-36/37/39-22-61 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | WW5075000 | |||||||||
| Autoignition Temperature | 980 °F | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 32019090 | |||||||||
| Hazardous Substances Data | 1401-55-4(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 oral in rabbit: 5gm/kg | |||||||||
| NFPA 704 |
|
Tannic acid price More Price(21)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | W304204 | Tannic acid | 1401-55-4 | 1SAMPLE-K | ₹5141.88 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W304204 | Tannic acid | 1401-55-4 | 1KG | ₹12849.28 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W304204 | Tannic acid | 1401-55-4 | 10KG | ₹79423.03 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | W304204 | Tannic acid | 1401-55-4 | 25KG | ₹123805.53 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | T0200 | Tannic acid Source: Chinese natural gall nuts | 1401-55-4 | 250G | ₹4026.9 | 2022-06-14 | Buy |
Tannic acid Chemical Properties,Uses,Production
Description
Tannic acid is a naturally occurring plant polyphenol and can
be found in practically all aerial plant tissues. Tannic acid was
historically used for the treatment of diarrhea, topically to dress
skin burns and rectally for treatment of unspecified rectal
disorders. Pharmaceutical use of tannic acid is discontinued
due to safer and better alternatives.
An unusually high incidence of esophageal cancer has been
noted in areas of South Africa, where a sorghum rich in tannins
is consumed. A positive relation has been observed between the
tannin content of the sorghum and the incidence of esophageal
cancer.
Chemical Properties
Tannic acid, C14H10O9, also known as digallic acid, tannin, and gallotannin, is a yellowish powder that decomposes at 210°C (410°F). Tannic acid is derived from nutgalls. It is soluble in water and alcohol,and is insoluble in acetone and ether. Tannic acid is used in tanning,textiles, and as an alcohol denaturant. An amorphous form of tannic acid, also known as pentadigalloylglucose, exists with the formula C76H52O46. It is a yellowish to brownish powder that is very soluble in alcohol and ether.It also decomposes between 210 and 215°C (410 and 419 °F). This form is used to clarify wine or beer, as a reagent,and as a mordant in dyeing.
Occurrence
Reported found in Quercus oliver and related species; Tara (Caesalpinia spinosa); and various sumac species, including Rhus semialata, R. coriaria, R. glabra and R. typhia.
Uses
Tannic Acid is a sequestrant that refers to a mixture of hydrolyzable tannins of a more complex structure than gallic acid. it is used in clarifying beer and wine. see tannins.
Preparation
Tannic acid is obtained by solvent extraction from the nutgalls or the excrescences that form on the young twigs of Quercus olivier and allied species of Quercus L.; from the seed pods of Tara (Caesalpinia spinosa); or from the nutgalls of various sumac species, including Rhus semialata, R. coriaria, R. glabra and R. typhia.
Definition
tannic acid: A yellowish complexorganic compound present in certainplants. It is used in dyeing as a mordant.
General Description
Light yellow to tan solid with a faint odor. Sinks and mixes with water.
Air & Water Reactions
Water soluble. Gradually darkens on exposure to air and/or light
Reactivity Profile
Glycerite decomposes at 210° to carbon dioxide and pyrogallol, which can form irritating vapors [USCG, 1999]. Incompatible with salts of heavy metals, alkaloids, gelatin, albumin, starch, oxidizing substances-e.g., permanganates, chlorates; lime water [Merck].
Hazard
Toxic by ingestion and inhalation. Questionable carcinogen.
Health Hazard
Inhalation causes irritation of nose and throat, coughing, and sneezing. Ingestion may cause gastric disturbance. Contact with eyes causes irritation.
Fire Hazard
Special Hazards of Combustion Products: Decomposes at 210° to carbon dioxide and pyrogallol, which can form irritating vapors.
Industrial uses
Quebracho is the most common tannic acid derivative widely used in flotation. The
main phenolic nuclei present in Quebracho are resorcinol/phloroglucinol and catechol/pyrogallol.
Quebracho is commercially available in the following three forms: (a) standard
Quebracho, a direct hot-water extract from the heart-wood with adjusted pH (Qu–O), (b)
sulfited Quebracho, in which sulfonic acid groups have been introduced (Qu–S) and (c)
aminated Quebracho (Qu–A), where amine groups are introduced to ordinary Quebracho,
rendering the polymer amphoteric (iso-electric point at pH 7). Each of these types of
Quebracho has a different depressing effect.
Safety Profile
Poison by intravenous and intraperitoneal routes. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid smoke and irritating fumes.
Synthesis
Tannic acid is synthesized by extraction from Nutgalls (Chinese or Turkish), Myrobalans (Terminalia SP.), Oakbark, etc. It is also synthesized by esterification of Glucose with meta-galloylgallic acid.
Environmental Fate
Tannins and tannic acid occur naturally in plants. Essentially all wood and plant tissue contain tannins. Therefore, biodegradation is expected to be the major environmental fate process for tannic acid.
Tannic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Global Drilling Fluids and Chemicals Limited | +91-9899836400 +91-9810270611 | Haryana, India | 22 | 58 | Inquiry |
| Merck Ltd | +91-2262109800 +91-2262109000 | Maharashtra, India | 272 | 58 | Inquiry |
| Twinkle Chemi Lab Pvt Ltd | +91-9822390838 | Maharashtra, India | 12 | 58 | Inquiry |
| RYZE CHEMIE | +91-9702966440 +91-9702966440 | Maharashtra, India | 335 | 58 | Inquiry |
| ARRAKIS INDUSTRIES LLP | +91 74995 32711 | Maharashtra, India | 1353 | 58 | Inquiry |
| CHEMSWORTH | +91-261-2397244 | New Delhi, India | 6700 | 30 | Inquiry |
| Scientific OEM | +91-22- 2343 7546 / 2341 3094 | New Delhi, India | 1994 | 38 | Inquiry |
| ALPHA CHEMIKA | +91-22-22061123 +91-22-66382501 | Mumbai, India | 1679 | 43 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5870 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6905 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| Global Drilling Fluids and Chemicals Limited | 58 |
| Merck Ltd | 58 |
| Twinkle Chemi Lab Pvt Ltd | 58 |
| RYZE CHEMIE | 58 |
| ARRAKIS INDUSTRIES LLP | 58 |
| CHEMSWORTH | 30 |
| Scientific OEM | 38 |
| ALPHA CHEMIKA | 43 |
| Otto Chemie Pvt. Ltd. | 58 |
| Alfa Aesar | 58 |
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