Agent Name

Tannic acid

CAS Number

1401-55-4

Major Category

Other Classes

Synonyms

Acacia mollissima tannin; Acid, tannic; Acide tannique [French]; Castanea sativa Mill tannin; Gallotannic acid; Gallotannin; Glycerite; Liquidambar styraciflua; Quebracho wood extract; Schinopsis lorentzii tannin; Tannic acid; Tannic acid (Quercus spp.); Tannic acid; Tannin; Tannin; Tannin from chestnut; Tannin from mimosa; Tannin from quebracho; Tannin from sweet gum; Tannins; d'Acide tannique [French]; Chestnut tannin; Mimosa tannin; Quebracho tannin; Sweet gum; Hydrolyzable gallotannin; Quebracho extract; [ChemIDplus] Tannin; Gallotannin; Gallotannic acid; [Merck Index]

Category

Other Organic Compounds

Description

Yellowish to light brown solid; [HSDB]

Sources/Uses

Used as a dye mordant and to make ink, sizing paper, silk, and printed fabrics; Also used in tanning, rubber manufacturing, beer and wine clarifying, photography, and medicine (astringent and topical treatment of burns); Extracted from nutgall; Occurs in bark and fruit of many plants; [Merck Index] Also used in treatment of waste water and boiler water; [HSDB]

Comments

Commercial tannic acid (C76-H52-O46) usually contains about 10% water; [Merck Index] Corrosive to skin; [Quick CPC] A skin, eye, and respiratory tract irritant; [CAMEO]

Exposure Assessment
Explanatory Notes

Flash point = 390 deg F; [HSDB]

Flammability (NFPA)

1: Must be preheated

Adverse Effects
Dermatotoxin

Skin Burns

IARC Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Processes

Industrial Processes with risk of exposure: