Product Overview
Tannic Acid, Powder, Reagent, ACS Grade
Molecular Formula: C76H52O46
CAS Number: 1401-55-4
Molecular Weight: 1701.20
Tannic acid is a specific form of tannin, a type of polyphenol. Tannic acid is usually extracted from: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian sumac leaves (Rhus coriaria). It is an inhibitor of NOS3 and a weak inhibitor of NOS2 and NOS1. As an ACS grade Reagent, ScienceLab sulfuric acid is used as the quality standard against which other substances are graded and has met the toughest regulatory standards for quality and pureness.
Synonyms: Tannin; Gallotannic Acid; Digallic Acid; Gallotannin
| TEST | RESULTS |
|---|---|
| Appearance | Light yellow powder |
| Identification | Complies |
| Purity (Titration) | 95.66% |
| Residue on Ignition | 0.48% |
| Resinous Substances | Complies |
| Solubility | 1 g in 0.35 water |
| Dextrin Test | Sugars, dextrin test: Complies |
| Heavy Metals | < 0.003% |
| Loss on Drying | 9.23% (at 105 °C) |
| Organic Volatile Substances | Complies |
| Organic Volatile Impurities | Complies |
| Arsenic | < 3 ppm (As2O2) |
| Zinc | < 0.005% |
Shipping Information
Tariff No. 3201901000
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Storage Information
LIGHT SENSITIVE: Keep tightly closed in light-resistant containers.
