Sodium Monofluorophosphate CAS 10163-15-2

Product name: Tannic acid
English alias: Tannin; Gallotannin
CAS: 1401-55-4
Molecular formula: C76H52O46
Appearance: Light yellow to pale brown powder or granules
Package: 25kg/drum

What is Tannic acid?

Tannic acid is a naturally occurring polyphenol extracted primarily from plant sources such as gallnuts, tara pods, and sumac leaves. It is widely used in industries like leather tanning, inks, dyes, and food additives due to its excellent ability to bind proteins and metal ions. Tannic acid acts as a natural antioxidant and has astringent properties. It is soluble in water and appears as a light yellow to pale brown powder or granules. Its molecular formula is C76H52O46.

COA:

Item	Specification	Result
Appearance	Light yellow to pale brown powder	Light yellow powder
Purity (%)	≥98.0	98.7
Loss on drying (%)	≤5.0	3.2
Ash (%)	≤5.0	2.5
PH value	4.0 – 6.0	5
Conclusion	PASS	PASS

Application:

Tannic acid used extensively in leather tanning for converting animal hides into leather
Tannic acid employed as a mordant in dyeing and ink production
Tannic acid utilized in food and beverage industry as a clarifying agent and antioxidant
Tannic acid used in water purification and metal ion precipitation

Manufacturing:

Used in leather tanning, ink production, and as a food and wine additive

Safety profile:

Tannic acid is generally regarded as safe when used appropriately. It is non-toxic at low concentrations but may cause irritation to skin or mucous membranes on prolonged contact. It is biodegradable and environmentally friendly.

Storage requirements:

Store in a cool, dry, and well-ventilated place
Protect from moisture and direct sunlight
Relative humidity < 50%
Keep container tightly closed to avoid contamination

Transport & Packaging:

Supplied in 25 kg drums or bags
Packaging ensures protection from moisture and contamination during transport and storage