Product Name: Tannic acid
Chemical Formula: C76H52O46
Synonyms: Gallotannin, Acidum tannicum, Quercitannin
CAS Number: 1401-55-4
Recommended Use: Laboratory chemicals, industrial applications, clarifying agent in beverages, dyeing processes
Manufacturer Information: Supplier contact details provided on order
Emergency Phone Number: Emergency response contact linked to local health services or poison control center
Classification: Skin irritant (Category 2), Eye irritant (Category 2A), Specific target organ toxicity - single exposure (Category 3)
Label Elements: Warning symbol, signal word: Warning, hazard statements regarding skin and eye irritation
Hazard Statements: Causes skin irritation and serious eye irritation; may cause respiratory irritation
Precautionary Statements: Avoid breathing dust or fumes, wash thoroughly after handling, use only outdoors or in a well-ventilated area, wear protective gloves and eye protection
Potential Health Effects: Short-term exposure may irritate skin, eyes, and upper respiratory tract; repeated contact could lead to dermatitis or allergic reactions; ingestion can upset gastrointestinal tract
NFPA Ratings: Health 2, Flammability 1, Reactivity 0
Chemical Name: Tannic acid
Concentration: ≥ 99% by weight
Impurities: Trace organic acids or ash (<1%)
Molecular Weight: Approximately 1701.2 g/mol
Ingredient List: Gallotannins derived from plant material
Inhalation: Remove individual to fresh air, seek medical attention for persistent cough or breathing difficulty
Skin Contact: Wash skin thoroughly with mild soap and water, remove contaminated clothing and wash before reuse, contact doctor if irritation develops
Eye Contact: Flush eyes gently with plenty of water for at least 15 minutes, hold eyelids open, get medical help if visible irritation persists
Ingestion: Rinse mouth, obtain immediate medical aid, never induce vomiting unless instructed by a physician
Advice for Doctors: Treat symptomatically, monitor for signs of allergic or respiratory reaction
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Media: High-pressure water streams that could spread dust
Special Fire Hazards: Powder may contribute to combustible dust hazard in air, thermal decomposition may produce toxic/irritating fumes including carbon oxides
Protective Equipment and Precautions: Firefighters use self-contained breathing apparatus and full protective gear, avoid inhaling gases produced in fire
Further Information: Move containers away from fire area if safe, cool exposed vessels with water to prevent pressure build-up
Personal Protection: Use personal protective equipment including goggles, gloves, mask, keep unprotected persons away
Environmental Precautions: Prevent entry into waterways, soil or drains, alert appropriate authorities for significant spills
Methods for Clean-Up: Pick up spill mechanically, avoid generating dust, sweep up and place in suitable sealed containers for reuse or disposal, ventilate affected area
Reference to Other Sections: Follow local regulations regarding disposal, consult exposure controls and personal protection guidelines
Handling Precautions: Avoid contact with eyes, skin, or clothing, minimize dust generation, use only in well-ventilated environment, avoid inhalation and ingestion
Technical Measures: Use proper equipment for handling powders, ensure sources of ignition are controlled, ground all transfer equipment
Storage Requirements: Store in tightly sealed container, cool and dry place, away from strong oxidizing agents, acids and moisture, designated area for chemical storage
Incompatibilities: Strong oxidizing substances, reducing agents, certain metal salts
Exposure Limits: Not specifically established, handle with good laboratory hygiene standards
Engineering Controls: Local exhaust ventilation, adequate general ventilation to keep airborne concentrations low
Personal Protection: Protective goggles, laboratory gloves (nitrile or latex), dust mask or respirator for powder handling, chemical-resistant lab coat
Hygiene Measures: Wash hands before breaks and after work, avoid eating or drinking around chemical
Appearance: Light yellow to brown powder
Odor: Mild, astringent odor
pH: 2.0 – 4.0 (1% aqueous solution)
Melting Point: Decomposes at temperatures above 200°C
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable under normal conditions
Solubility: Soluble in water (completely), soluble in ethanol
Vapor Pressure: Not applicable
Relative Density: 1.6–1.7 (water = 1)
Partition Coefficient (n-octanol/water): No data available
Evaporation Rate: Not applicable
Decomposition Temperature: >200°C
Chemical Stability: Stable under normal ambient and anticipated storage conditions
Conditions to Avoid: Moisture, elevated temperatures, light, contact with air for extended periods
Incompatible Materials: Strong oxidizers, acids, reducing agents, metal salts (iron, copper)
Hazardous Decomposition Products: Carbon dioxide, carbon monoxide, organic acids under fire or thermal decomposition
Hazardous Reactions: None expected if handled according to recommendations
Acute Toxicity: Oral LD50 rat: approx. 2260 mg/kg
Routes of Exposure: Skin, eye contact, inhalation, ingestion
Effects of Short-Term Exposure: Irritation of skin, eyes, upper respiratory passages, potential for allergic reactions
Effects of Prolonged Exposure: Risk of dermatitis or irritation increases with repeated or prolonged contact
Carcinogenicity: No recognized carcinogenic potential from IARC, NTP, ACGIH, or OSHA
Mutagenicity: No evidence in standard tests
Reproductive Toxicity: No data suggesting reproductive effects
Aquatic Toxicity: May be harmful to aquatic organisms in large quantities, limited direct toxicity at typical discharge levels
Persistence and Degradability: Readily degradable, undergoes natural biodegradation in water and soil
Bioaccumulative Potential: Does not bioaccumulate in aquatic systems
Mobility in Soil: Moderate mobility, binds with soil and organic material
Addition Information: Aquatic impact more likely from significant spills, follow local regulations and best practice for mitigation
Product Disposal: Dispose as non-hazardous organic waste if uncontaminated; if contaminated, follow hazardous waste protocols; best practice involves incineration in approved facilities
Packaging Disposal: Rinse and recycle plastic or glass containers where regulations allow, otherwise landfill in compliance with local rule
Disposal Methods: Follow federal, state, and local environmental regulations regarding chemical and package disposal
Waste Codes: No specific waste code, use general chemical waste coding
UN Number: Not classified as hazardous for transport
Proper Shipping Name: Not regulated for domestic or international transport
Transport Hazard Classes: Not applicable
Packing Group: Not applicable
Environmental Hazards: None required for shipment under standard conditions
Special Precautions: Use sealed packaging to prevent dust dispersal in transit; avoid heavy loads that could cause breakage
OSHA Status: Not listed as hazardous, standard chemical hygiene applies
TSCA Status: Listed on US TSCA Chemical Inventory
SARA Title III: Not subject to reporting under SARA Title III Sections 302, 304, or 313
DSL/NDSL (Canada): Listed as non-restricted
REACH Status (EU): Registered for laboratory and industrial use
Other Regulations: Complies with FDA and EFSA limits for specific food and beverage applications, monitor for updates to workplace exposure limits and safe handling guidance
