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Product Name: Citric Acid
Chemical Formula: C6H8O7
CAS Number: 77-92-9
EC Number: 201-069-1
Synonyms: 2-Hydroxy-1,2,3-propanetricarboxylic acid; Lemon acid
Intended Use: Food additive, cleaning agent, laboratory reagent, industrial applications
Manufacturer Contact: [Include supplier name, street address, telephone, emergency contact number]
GHS Classification: Eye Irritation Category 2A, Skin Irritation Category 2
Hazard Statements: Causes serious eye irritation and mild skin irritation; may aggravate pre-existing skin conditions
Signal Word: Warning
Pictograms: Exclamation mark
Precautionary Statements: Avoid contact with eyes and skin, use personal protective equipment, wash hands thoroughly after handling
Other Hazards: Dust may cause respiratory irritation; not classified as an environmental hazard in diluted quantities
Chemical Name: Citric Acid Anhydrous or Monohydrate
Concentration: 100% for anhydrous powder or monohydrate form
CAS Number: 77-92-9 (anhydrous), 5949-29-1 (monohydrate)
Impurities and Stabilizing Additives: No significant additional ingredients or additives; food grade or industrial grade purity available
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy to do, get medical advice if irritation persists
Skin Contact: Wash affected skin with plenty of soap and water, remove contaminated clothing and seek medical attention for persistent irritation
Inhalation: Move to fresh air, keep person comfortable, seek medical attention if symptoms develop
Ingestion: Rinse mouth with water, drink plenty of fluids, avoid inducing vomiting, seek medical advice for large amounts consumed
Advice to Physician: Treat symptomatically, monitor for irritation and allergic reactions
Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide can be used to put out fires
Specific Hazards: Combustion produces carbon oxides (CO, CO2), may form irritating gases under fire conditions
Protective Equipment for Firefighters: Wear full protective gear and self-contained breathing apparatus, avoid inhalation of combustion products
Firefighting Instructions: Use standard firefighting techniques, cool containers with water to prevent rupture, move containers away from fire area if safe to do so
Personal Precautions: Wear appropriate protective gear including gloves, goggles, and respirator if dust is generated
Environmental Precautions: Prevent large quantities from entering watercourses or drains; small spills can be diluted and washed away with water
Cleanup Methods: Sweep up or vacuum spillage into containers for recovery or disposal, avoid creating dust, ventilate area
Disposal of Contaminated Materials: Collect waste in sealed containers, dispose of per local regulations
Safe Handling: Work in well-ventilated areas, avoid creating or breathing dust, keep away from incompatible substances such as strong bases and oxidizing agents
Storage Conditions: Store in a cool, dry, well-ventilated space, keep in tightly closed containers, protect from moisture and direct sunlight
Incompatible Materials: Avoid contact with strong alkalis, oxidizers, reducing agents; reacts with calcium salts
Special Measures: Use non-sparking tools, equipment made of compatible materials, maintain good housekeeping to prevent buildup of dust
Occupational Exposure Limits (OEL): Not specifically regulated, workplace dust limits apply (e.g., 10 mg/m3 for total inhalable dust)
Engineering Controls: Use local exhaust ventilation to control dust, install eyewash stations and safety showers
Personal Protective Equipment (PPE): Wear safety goggles, chemical-resistant gloves, lab coat or apron, dust mask or respirator if airborne particulates are present
Hygiene Measures: Wash hands before breaks and at end of workday, do not eat or drink in handling area, launder contaminated clothing before reuse
Appearance: White crystalline powder or colorless crystals
Odor: Faintly acidic, almost odorless
pH (1% solution): 2.2 (acidic)
Melting Point: 153°C (decomposes)
Boiling Point: Decomposes before boiling
Solubility in Water: 59g/100 ml at 20°C
Density: 1.66 g/cm3 (anhydrous)
Vapor Pressure: Negligible at room temperature
Partition Coefficient: log P (octanol/water) -1.64
Flash Point: Not applicable
Auto-Ignition Temperature: 1010°C
Chemical Stability: Stable under normal temperatures and recommended storage conditions
Reactivity: Reacts vigorously with strong alkalis and oxidizing agents, may form salts with metals like calcium and magnesium
Conditions to Avoid: Exposure to heat, moisture, incompatible chemicals
Decomposition Products: Carbon dioxide, carbon monoxide, irritating and toxic fumes
Polymerization: Will not occur under recommended conditions
Routes of Entry: Inhalation, skin and eye contact, ingestion
Acute Toxicity: LD50 oral (rat) 3000 mg/kg
Chronic Effects: Long-term exposure to large quantities may result in dental erosion, skin irritation, or respiratory tract irritation
Irritation: Causes severe eye irritation; slight skin irritation possible, respiratory tract irritation if dust inhaled
Allergic Reactions: Rare, but sensitization or allergic dermatitis can occur
Mutagenicity: No significant evidence in standard tests
Carcinogenicity: Not classifiable by IARC; not listed by NTP, OSHA, or ACGIH
Ecotoxicity: Rapidly biodegradable in environment, low bioaccumulation potential
Aquatic Toxicity: Practically non-toxic at dilutions typical for consumer or industrial use, but large uncontrolled releases can cause local acidification
Persistence and Degradability: Quickly broken down by soil and water microorganisms
Mobility in Soil: Highly mobile due to high water solubility
Bioaccumulation: Not expected to occur
Additional Notes: Avoid large spills into waterways to prevent changes to local pH and potential harm to aquatic life during initial dissolution
Waste Disposal: Dispose in accordance with local, regional, or national regulations; dilute small amounts with plenty of water before draining to sewers
Container Disposal: Empty containers should be rinsed thoroughly and recycled or disposed per local guidelines
Environmental Precautions: Do not allow large quantities to contaminate groundwater or surface water
Special Instructions: For industrial quantities, use a licensed waste disposal contractor
UN Number: Not regulated for transport
Proper Shipping Name: Not classified as a hazardous material
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Marine Pollutant: No
Transport Notes: Store and ship in original, tightly closed packaging to prevent moisture uptake and spillage; keep away from incompatible substances and foodstuffs during transport
U.S. Regulations: Not subject to reporting under CERCLA, SARA Title III; FDA approved for use in foods, EPA minimum risk pesticide
EU Regulations: Registered under REACH; not classified as dangerous substance under Regulation (EC) No 1272/2008
Labeling Requirements: Chemical name, hazard pictograms, manufacturer/equipment emergency contact must be present
Other Standards: Complies with standards set by FAO, WHO, JECFA, FCC for food and pharmaceutical use
Workplace Controls: Occupational limits and controls focus on general dust and acid management rather than specific citric acid hazards
International Inventories: Present on TSCA, EINECS, DSL, AICS, ENCS, IECSC, and other major national chemical inventories
