Molekula
Tannic acid
Tannic acid is a polyphenolic compound widely used in tanning leather, as a mordant in dyeing, and in pharmaceutical and food applications. It is a naturally occurring hydrolyzable tannin with the molecular formula C76H52O46 and a molecular weight of 1701.20 g/mol. Available in powder form, it is stable at ambient storage conditions. It carries a warning signal word due to potential irritant properties. Molekula supplies tannic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Tannic acid is a polyphenolic compound widely used in tanning leather, as a mordant in dyeing, and in pharmaceutical and food applications. It is a naturally occurring hydrolyzable tannin with the molecular formula C76H52O46 and a molecular weight of 1701.20 g/mol. Available in powder form, it is stable at ambient storage conditions. It carries a warning signal word due to potential irritant properties. Molekula supplies tannic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Amorphous light yellow to brown powder |
| Density | 0.50 - 0.45 |
| Conclusion | Conforms to USP34 |
| Heavy metals | ≤20ppm |
| Identification | Conforms to reference |
| pH | 3.0 - 4.0 |
| Loss on Drying | ≤9.0% |
| Solubility | Very soluble in water, freely soluble in acetone and alcohol |
| Residue on Ignition | ≤1.0% |
| Content | ≥81% (Tannic acid content, dry basis) |
| Colour gardner | ≤5 |
| Sulfated ash | ≤0.1% |
| Lead (Pb) | ≤5ppm |
| Arsenic (As) | ≤3ppm |
| Gallic Acid | ≤4.0% |
| Gums, Dextrin Test | No Turbidity |
| Resins Test | No Turbidity |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 1401-55-4 |
| Molecular Formula | C76H52O46 |
| Molecular Weight | 1701.20 |
| SMILES | C1=C(C=C(C(=C1O)O)O)C(=O)OC2=CC(=CC(=C2O)O)C(=O)OCC3C(C(C(C(O3)OC(=O)C4=CC(=C(C(=C4)OC(=O)C5=CC(=C(C(=C5)O)O)O)O)O)OC(=O)C6=CC(=C(C(=C6)OC(=O)C7=CC(=C(C(=C7)O)O)O)O)O)OC(=O)C8=CC(=C(C(=C8)OC( |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| Tariff Code | 3201909080 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H319 Causes serious eye irritation
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P337+313 If eye irritation persists get medical advice/attention
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is tannic acid used for?
Tannic acid is commonly used in leather tanning, as a mordant in dyeing, and in pharmaceutical and food applications as an astringent or antioxidant.
What is the chemical formula and molecular weight of tannic acid?
The formula is C76H52O46 with a molecular weight of 1701.20 g/mol.
How should tannic acid be stored?
Store at ambient temperature, protected from moisture and light.
What grade of tannic acid does Molekula supply?
We supply reagent grade tannic acid suitable for laboratory and industrial use.
Can Molekula supply tannic acid in bulk?
Yes, we can supply tannic acid in bulk quantities—please contact us for pricing and availability.
What documentation comes with a tannic acid order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.