Tannic acid

1. Identification

Product Identifiers

Product Name

Tannic acid

Other Names

Synonyms

Product Number(s)

403040, C081 N

CAS Number

1401-55-4

Recommended use of the chemical and restriction on use

Company Details

Emergency Contact Details

2. Hazards Identification

Classification of the substance or mixture

Label Elements

Signal Words

Warning

Hazard Statement(s)

• Causes skin irritation.
• Causes serious eye irritation.

Precautionary Statement(s)

• Wash thoroughly after handling.
• Wear protective gloves / eye protection / face protection.

Primary route(s) of entry

Human Health

Inhalation

No information available.

Ingestion

No information available.

Eyes

• Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
• Continue rinsing.
• If eye irritation persists: Get medical advice/attention.

Skin

• If on skin: Wash with plenty of water.
• If skin irritation occurs: Get medical advice/attention.
• Take off contaminated clothing and wash it before reuse

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

After swallowing: make victim drink water (two glasses at most). Consult doctor if feeling unwell.

Inhalation

After inhalation: fresh air.

Skin Contact

In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower.

Eye Contact

After eye contact: rinse out with plenty of water. Remove contact lenses.

Other Information

• Symptoms of poisoning may even occur after several hours; therefore medical observation for at least 48 hours after the accident.
• The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11

5. Firefighting Measures

Suitable extinguishing equipment

Fire

Water Foam Carbon dioxide (CO₂) Dry powder.

HAZCHEM

• Carbon oxides
• Combustible.
• Vapors are heavier than air and may spread along floors.
• Forms explosive mixtures with air on intense heating.
• Development of hazardous combustion gases or vapours possible in the event of fire.

Special protective equipment and precautions for fire fighters

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures

• Advice for non-emergency personnel: Avoid inhalation of dusts. Evacuate the danger area, observe emergency procedures, consult an expert.
• For personal protection see section 8.

Environmental precautions

Do not let product enter drains.

Methods and materials for containment and clean up

• Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up dry. Dispose of properly. Clean up affected area. Avoid generation of dusts.
• For disposal see section 13.

7. Handling and Storage

Precautions for safe handling

• Precautions for safe handling Open and handle receptacle with care.
• Information about protection against explosions and fires: Keep respiratory protective device available.

Conditions for safe storage

Tightly closed. Dry.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls

Change contaminated clothing. Wash hands after working with substance.

Personal protective equipment

Eye and face protection

Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Safety glasses

Skin protection

• This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell, Internet: www.kcl.de).
• Full contact
• Material: Nitrile rubber
• Minimum layer thickness: 0.11 mm
• Break through time: 480 min
• Material tested:KCL 741 Dermatril® L

Respiratory protection

• required when dusts are generated.
• Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.

9. Physical and Chemical Properties

General information

Appearance

light brown Powder with lumps

Odour

Characteristic

pH

3.5

Vapour Pressure

Not applicable.

Density

0.44 g/cm³ (3.6718 lbs/gal) @ 20 °C (68 °F).

Boiling Point

No data available

Melting Point

No data available

Solubility

No data available

Specific Gravity of Density

No data available

Flash Point

199 °C

Flammable (Explosive) Limits

No data available

Ignition Temperature

Not determined. Product does not present an explosion hazard.

Formula

C₇₆H₅₂O₄₆

10. Stability and Reactivity

Reactivity

• Forms explosive mixtures with air on intense heating.
• A range from approx. 15 Kelvin below the flash point is to be rated as critical.
• The following applies in general to flammable organic substances and mixtures: in correspondingly fine distribution, when whirled up a dust explosion potential may generally be assumed.

Chemical stability

The product is chemically stable under standard ambient conditions (room temperature).

Possibility of hazardous reactions

Violent reactions possible with: Oxidizing agents

Conditions to avoid

Strong heating.

Incompatible materials

No data available

11. Toxicological Information

Acute effects

• LD50 Oral - Rat - 2,260 mg/kg
• Remarks: Behavioral:Convulsions or effect on seizure threshold.
• Lungs, Thorax, or Respiration:Dyspnea.
• Gastrointestinal:Other changes.
• Inhalation: No data available
• Dermal: No data available
• LD50 Intraperitoneal - Mouse - 120 mg/kg

Eye contact

Remarks: No data available

Skin contact

Remarks: No data available

Ingestion

Remarks: No data available

Inhalation

Remarks: No data available

Toxicity and irritation

• Germ cell mutagenicity
• Species: Rat
• Application Route: Oral
• Remarks: Unscheduled DNA synthesis
• Species: Rat
• Application Route: Subcutaneous
• Remarks: Unscheduled DNA synthesis
• Species: Mouse
• Application Route: Intraperitoneal
• Remarks: DNA inhibition
• Carcinogenicity
• No data available
• Reproductive toxicity
• No data available
• Specific target organ toxicity - single exposure
• No data available
• Specific target organ toxicity - repeated exposure
• No data available
• Aspiration hazard
• No data available

12. Ecological Information

Ecotoxicity

No data available

Persistence and degradability

No data available

Bioaccumulative potential

No data available

Other adverse effects

• General notes:
• Water hazard class 2 (Assessment by list): hazardous for water
• Do not allow product to reach ground water, water course or sewage system.
• Danger to drinking water if even small quantities leak into the ground.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

• Carbon oxides
• Combustible.
• Vapors are heavier than air and may spread along floors.
• Forms explosive mixtures with air on intense heating.
• Development of hazardous combustion gases or vapours possible in the event of fire.

UN Number

Void

Proper shipping name

Void

Transport hazard class

Void

Packing group

Void

Environmental hazard

Not applicable

Special precautions for users

Not applicable

Additional information

Not applicable

15. Regulatory Information

Poisons Schedule Number

• Sara
• Section 355 (extremely hazardous substances): Substance is not listed.
• Section 313 (Specific toxic chemical listings): Substance is not listed.
• TSCA (Toxic Substances Control Act): ACTIVE
• Hazardous Air Pollutants Substance is not listed.
• Proposition 65
• Chemicals known to cause cancer: Substance is not listed.
• Chemicals known to cause reproductive toxicity for females: Substance is not listed.
• Chemicals known to cause reproductive toxicity for males: Substance is not listed.
• Chemicals known to cause developmental toxicity: Substance is not listed.
• Carcinogenic categories
• EPA (Environmental Protection Agency) Substance is not listed.
• TLV (Threshold Limit Value) Substance is not listed.
• NIOSH-Ca (National Institute for Occupational Safety and Health) Substance is not listed.
• GHS label elements The substance is classified and labeled according to the Globally Harmonized System (GHS).

Other Information

Safety, health and environmental regulations/legislation specific for the substance or mixture No further relevant information available.

16. Other Information

SDS preparation date

16 March 2026

Comments

• Abbreviations and acronyms:
• ADR: Accord relatif au transport international des marchandises dangereuses par route (European Agreement Concerning the International
• Carriage of Dangerous Goods by Road)
• IMDG: International Maritime Code for Dangerous Goods
• DOT: US Department of Transportation
• IATA: International Air Transport Association
• EINECS: European Inventory of Existing Commercial Chemical Substances
• CAS: Chemical Abstracts Service (division of the American Chemical Society)
• NFPA: National Fire Protection Association (USA)
• HMIS: Hazardous Materials Identification System (USA)
• LC50: Lethal concentration, 50 percent
• LD50: Lethal dose, 50 percent
• PBT: Persistent, Bioaccumulative and Toxic
• vPvB: very Persistent and very Bioaccumulative
• NIOSH: National Institute for Occupational Safety
• OSHA: Occupational Safety Health
• TLV: Threshold Limit Value
• PEL: Permissible Exposure Limit
• REL: Recommended Exposure Limit
• Skin irritation 2: Skin corrosion/irritation - Category 2
• Eye irritation 2A: Serious eye damage/eye irritation - Category 2A

References

• EMS Tannins SDS, 05/01/2025 https://www.emsdiasum.com/docs/technical/msds/21700.pdf
• Sigma-Aldrich SDS Tannic acid 07/02/2025 https://www.sigmaaldrich.com/AU/en/sds/sial/403040-userType=anonymous