Product Description
CAS 1401-55-4 Tannic Acid With 99% Quality Best Price
Tannic acid is a specific commercial form of tannin. Its weak acidity (pKa around 10) is due to the numerous groups in the structure. The chemical formula for commercial tannic acid is often given as C76H52O46, which corresponds with decagalloyl glucose, but in fact it is a mixture of polygalloyl glucoses or polygalloyl quinic acid esters with the number of galloyl moieties per molecule ranging from 2 up to 12 depending on the plant source used to extract the tannic acid. Commercial tannic acid is usually extracted from any of the following plant part: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian Sumac leaves (Rhus coriaria).
According to the definitions provided in external references such as international pharmacopoeia, Food Chemicals Codex and FAO-WHO tannic acid monograph only tannins sourced from the above-mentioned plants can be considered as tannic acid. Sometimes extracts from chestnut or oak wood are also described as tannic acid but this is an incorrect use of the term. It is a yellow to light brown amorphous powder; 2850 grams dissolves in one litre of water (1.7 moles per liter).
While tannic acid is a specific type of tannin, the two terms are sometimes (incorrectly) used interchangeably. The long-standing misuse of the terms, and its inclusion in scholarly articles has compounded the confusion. This is particularly widespread in relation to green tea and black tea, both of which contain tannin but not tannic acid.
Tannic acid is not an appropriate standard for any type of tannin analysis because of its poorly defined composition.
| Product name |
Tannic acid |
| CAS NO |
1401-55-4 |
| Purity |
98% |
| Apperance |
Slight yellow powder |
| Melting point |
218ºC |
| Bioling point |
862.78ºC |
| Density |
1.2965g/cm3 |
Function
1. With the function of antioxidant and antimicrobial;
2. It has the effect on improving the body disease-resistant ability, liver and gastrointestinal system function
3. With the function of treating chronic diarrhea and dysentery;
4. With the function of dispelling heat, eliminating irritability, diuretic, cooling blood and detoxification;
5. With the function of enhancing immunity.
Application
1. It can be used as food antioxidant. It is generally mixed with vitamin E, vitamin C or gallic acid before use.
2. Tannin is used as a viscosity reducer and fluid loss reducer for water-based drilling fluids, which can improve the quality of filter cake. It is also used for tanning raw hides and turning them into leather. Tannin has the activity of reacting with proteins, polysaccharides, alkaloids, microorganisms, enzymes, and metal ions, and has the properties of anti-oxidation, capturing free radicals, bacteriostasis, and derivatization reactions. It is more and more widely used in food processing, fruit and vegetable processing, storage, cosmetics, medicine and water treatment.
3. Tannic acid can combine with protein to produce water-insoluble tannic acid protein, so adding it to shampoo can prevent the dissolution of hair fiber protein and protect the hair, and when used in nail products, it can increase nail strength. Gallic tannic acid and isogallic tannic acid have a strong free radical scavenging effect, and their effects are similar to those of gallic acid and catechin compounds. They can be used in skin care products for sun protection and skin lightening. Tannic acid has astringent and antibacterial properties. It is clinically used to treat local bleeding, and can be used for toothpaste to protect teeth and prevent gum bleeding.
4. Mainly used in medicine, ink, printing and dyeing, leather and metallurgy industries and water treatment. Tannin has the functions of flocculation, deoxidation, scale inhibition and sterilization in the water treatment process. Because there are a large number of hydroxyl groups and carboxyl groups produced by partial hydrolysis in the molecular structure, it forms complexes with calcium and magnesium ions in the water to prevent calcium and magnesium ions in the boiler water from forming scale, and can also reduce the deposition of calcium sulfate in the cooling water. , Play a decentralized role. In addition, the cohesive force of tannins can aggregate the sediment into slag, which is discharged out of the boiler and cooling water system through sewage.
5. It can be used as a clarifying agent for low-alcohol wine and fruit wine. It can also be used as a leather tanning agent.
6. Tannic acid is used for chromium-free passivation of galvanized layer.
Detailed Photos
Packaging & Shipping
Package: 2-layer PE bag
1kg/aluminium foil bag, with two plastic bags inside.
25kg/fiber drum, with two plastic bags inside.
Size:ID 42cm*H52cm,0.08m3/drum;
Net Weight:25kgs Gross Weight:28kgs.
Net Weight Per Bag: 25kgs or 50kgs or 1ton
Port: Qingdao, Tianjin, Shanghai
Stored in a cool, ventilated warehouse. Away from fire and heat. Acids, etc. should be kept separately, avoid mixed reserve.
Company Profile
Our Advantages
1. Quality
Our products meet MSDS safe standard and we have ISO and other certificate so you can get high quality products from our company.
2. Price
We are the company which is the joint of trade and industry so we can provide the competitive price and high quality product.
3. Packing
We can do according to the customers' request.
4. Transport
The products can be transported by Courier, by air or by sea.
5. Service
We will reply your message in 24 hours.
FAQ
Q1: What payment terms do you accept ?
A:We'd like to accept T/T, L/C, Paypal, or Western Union.
Q2: How long will it take to get the good?
A:Depending on your location, For small order, please expect 5-7 days by DHL,UPS,TNT, FEDEX, EMS. For mass order, please allow 5-8 days by Air, 20-35 days by Sea.
Q3: How do you treat quality complaint?
A:First of all, our quality control will ensure the product quality in advance. If there is a real quality problem caused by us,we will send you free goods for replacement or refund your loss.
Q4: Can I get a sample?
A:Free samples is available, while the shipping cost should undertake by your side.
Q5: What is your MOQ?
A:Our MOQ is 10g, 100g and 1kg for your evaluation quality of our goods on the condition that sample charge is 100% paid.
Q6: Is there any discount?
A:Yes, for larger quantity, we always support with better price.
Audited Supplier 
Audited Supplier 
){kind=link}
){kind=link}