Tannic acid
Synonyms
FEMA No. 3042;
Category
Non-ionic surfactant
> Phenol
>> Ester-group Phenol
Chemical Numbering System
CAS: 1401-55-4
EINECS: 215-753-2
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable. Easily oxidized. Under strong acid or strong alkali condition, easily hydrolyzed.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
domestic animals - goat/sheep LDLo |
1000mg/kg[1] |
|
domestic animals - goat/sheep LDLo |
1000mg/kg[1] |
|
guinea pig intravenous LDLo |
40mg/kg[1] |
|
mouse intramuscular LD50 |
120mg/kg[1] |
|
mouse intramuscular LD50 |
350mg/kg[1] |
|
mouse intramuscular LD50 |
> 1600mg/kg[1] |
|
mouse intraperitoneal LD50 |
120mg/kg[1] |
|
mouse intraperitoneal LD50 |
150mg/kg[1] |
|
mouse intraperitoneal LD50 |
320mg/kg[1] |
|
mouse intraperitoneal LD50 |
360mg/kg[1] |
|
mouse intravenous LD50 |
50mg/kg[1] |
|
mouse intravenous LD50 |
130mg/kg[1] |
|
mouse subcutaneous LD50 |
140mg/kg[1] |
|
mouse subcutaneous LD50 |
> 1600mg/kg[1] |
|
mouse intravenous LDLo |
10mg/kg[1] |
|
mouse oral LDLo |
2000mg/kg[1] |
|
mouse subcutaneous LDLo |
75mg/kg[1] |
|
rabbit oral LD50 |
5000mg/kg[1] |
|
rat oral LD50 |
2260mg/kg[1] |
|
rat parenteral LDLo |
1400mg/kg[1] |
|
rat subcutaneous LDLo |
200mg/kg[1] |
Overall carcinogenic evaluation: Group 3[1].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, antibacterial, anti-inflammatory, dispersing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), LY/T 1300 Tannic Acid (for industrial use)
(1b), LY/T 1640 Tannic acid (for pharmaceutical industry)
(1c), LY/T 1641 Tannic acid (food grade)
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as antioxidant.
2, Personal care products
Masking agent, astringent in personal care products.
3, Food
Use as food additive (perfume), food processing aid.
4, Leather
Tanning agent in leather.
5, Water treatment
Use as water treatment agent (for example, clarifying agent).
6, Dyes
Mordant in dyes.
Manufacturers
References
[1]: ChemIDplus. 1401-55-4, Tannic acid
Update: 20190908(1)