Tannic Acid - Acidum tannicum - Gallotannic acid - Digallic acid - Gallotannin - Tannimum - - 100g

TANNIC ACID PURE
1,2,3,4,6-penta-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-D-glucopyranose

Chemical Formula: C76H52O46C
Molar Mass: 1701.29 g/mol
CAS Number: 1401-55-4

Tannic acid is a naturally occurring polyphenolic compound found in a variety of plant species, particularly in oak, sumac, and chestnut. It is a type of tannin, a class of astringent polyphenolic substances that have the ability to bind proteins. Tannic acid appears as a yellowish or light brown powder that is soluble in water and alcohol.

This compound is widely used in the leather industry as a tanning agent, where it binds with collagen to make leather more durable, flexible, and resistant to decomposition. Tannic acid is also utilized in the textile industry for dyeing and in the production of inks, particularly iron gall ink, where it reacts with iron salts to create a stable and dark ink.

In laboratory applications, tannic acid is employed for its astringent and antioxidant properties. It is also used as a reagent in chemical processes and in various chemical analyses due to its ability to precipitate proteins.

Tannic acid can be toxic in large quantities, especially when handled improperly. It should be stored in a cool, dry environment and handled with appropriate precautions.

SAFETY

Warning

GHS07

Hazard statements H319 Causes serious eye irritation Precautionary statements

Precautionary statements - response P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P337+P313 If eye irritation persists: Get medical advice/attention

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Acidum tannicum
Gallotannic acid
Digallic acid
Gallotannin
Tannimum
Quercitannin
Oak bark tannin
Quercotannic acid
Querci-tannic acid
Querco-tannic acid