Product Name: Sodium Dihydrogen Citrate
Synonyms: Monosodium citrate, Sodium acid citrate
Chemical Formula: C6H7NaO7
CAS Number: 18996-35-5
Recommended Use: pH regulator, buffering agent in foods and pharmaceuticals
Supplier Details: Manufacturer and supplier address, phone number, emergency contact
Contact Information: Emergency telephone number provided by supplier
Product Type: Solid, crystalline, white powder or granules
GHS Classification: Eye irritation Category 2A, Skin irritation Category 3
Hazards: Can cause moderate eye irritation, mild skin irritation, respiratory tract irritation
Pictogram: Exclamation mark
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, may cause mild skin irritation
Precautionary Statements: Wash hands after handling, avoid inhaling dust, use proper eye protection, avoid contact with eyes and skin
Symptoms of Exposure: Redness, itching, watery eyes, coughing on inhalation, dry skin
Chemical Name: Sodium Dihydrogen Citrate
Concentration: Greater than 98%
Impurities: Trace amounts of sodium citrate species
Molecular Weight: 214.1 g/mol
EC Number: 242-734-6
Inhalation: Move person to fresh air, offer water if coughing, seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, wash with soap and water for several minutes, call doctor if irritation develops
Eye Contact: Rinse cautiously with water for 10–15 minutes, keep eyelids open, seek medical advice if irritation remains
Ingestion: Rinse mouth out with water, drink water to dilute, never induce vomiting unless directed by medical personnel; seek attention if feeling unwell
Most Important Effects: Eye irritation and mild skin discomfort
Notes for Doctors: Treat symptomatically based on patient presentation, no specific antidote reported
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Media: Strong water jets can cause spattering
Hazards During Fire: Material itself is not highly combustible, but decomposition can produce irritating gases like carbon oxides and sodium oxides
Protective Equipment: Wear self-contained breathing apparatus (SCBA), full protective clothing
Advice for Firefighters: Move packaging away from flame if safe, prevent run-off from entering drains, stay upwind
Explosion Data: Product does not present an explosion hazard under normal conditions
Personal Precautions: Avoid breathing dust, use gloves and eye protection, ventilate the area
Environmental Precautions: Prevent large spills from entering bodies of water, soil, and drains
Spill Cleanup: Sweep material into suitable, labeled containers for recovery or disposal; wash area with plenty of water
Disposal: Follow local, regional, and national regulations
Decontamination Techniques: Contaminated surfaces should be rinsed thoroughly
Handling: Minimize dust generation, use in well-ventilated areas, avoid contact with eyes and skin, wash hands thoroughly before eating, drinking, or smoking
Storage Conditions: Keep container tightly closed in a cool, dry place away from incompatible substances (such as strong oxidizers), avoid moisture
Packing Material: Store in original packaging or corrosion-resistant containers
Incompatible Materials: Strong bases, strong oxidizing agents
Special Requirements: Store spill kits nearby for emergencies
Engineering Controls: Provide adequate general or local exhaust ventilation, use enclosed processes if possible
Personal Protection—Eye: Safety goggles to avoid splashes and dust
Personal Protection—Skin: Protective gloves and laboratory coats
Respiratory Protection: Dust mask for significant exposure above recommended limits
Workplace Monitoring: Routine checks for airborne levels
Hygiene Measures: No eating or drinking in work area, wash before breaks and at end of shift
Occupational Exposure Limit: No specific limit established, general dust exposure limits apply
Appearance: White to off-white crystalline powder
Odor: Odorless
pH (1% solution): About 2.5–3.5
Melting Point: Decomposes above 150°C
Boiling Point: Not available
Solubility: Freely soluble in water (over 500 g/L at 25°C), practically insoluble in ethanol
Density: Approximately 1.95 g/cm³
Partition Coefficient: Not applicable
Vapor Pressure: Negligible at 25°C
Auto-ignition Temperature: Not self-igniting
Other Physical Properties: No data for viscosity, evaporation rate
Chemical Stability: Stable at normal temperatures and pressures
Reactivity: Not reactive with most materials in standard storage and use
Hazardous Reactions: Reacts with strong oxidizers and strong bases, producing heat and possible off-gassing
Conditions to Avoid: Avoid excessive heat, open flames, and contact with incompatible materials
Incompatible Materials: Strong bases, strong oxidizers
Hazardous Decomposition Products: Releases carbon oxides and sodium oxides on thermal decomposition
Acute Toxicity: Oral LD50 in rats is greater than 2000 mg/kg, low toxicity
Skin Corrosion/Irritation: Mild irritation possible from direct, prolonged exposure
Eye Damage/Irritation: Serious eye irritation with direct contact
Respiratory Sensitization: No data supporting sensitization
Ingestion: May cause gastrointestinal discomfort (nausea, vomiting, upset stomach)
Repeated Dose Toxicity: No known chronic effects with ordinary exposures
Carcinogenicity, Mutagenicity, Reproductive Toxicity: No evidence from laboratory studies; not classified as a carcinogen by IARC, NTP, or OSHA
Other Effects: No evidence of neurotoxicity or reproductive harm
Ecotoxicity: Low aquatic toxicity expected, readily biodegradable
Aquatic Organisms: LC50 (fish, 96h): greater than 100 mg/L
Persistence and Degradability: Biodegrades rapidly in the environment
Bioaccumulation Potential: Negligible, does not accumulate in organisms
Mobility in Soil: High mobility due to water solubility; can leach into water tables in significant spills
Other Adverse Effects: Not classified as harmful to the environment under prevailing usage
Product Disposal: Dispose as non-hazardous chemical waste in compliance with local regulations, do not dispose into general sewage or household waste streams
Contaminated Packaging: Rinse containers thoroughly, offer for recycling or disposal through suitable waste management contractor
Disposal Methods: Consult local authorities for incineration, landfill, or hazardous waste processing sites
Special Precautions: Follow local, regional, and national guidelines for chemical waste disposal
UN Number: Not classified as dangerous goods
Proper Shipping Name: Sodium Dihydrogen Citrate
Transport Hazard Class: Not regulated for transport by land, sea, or air
Packing Group: Not applicable
Environmental Hazards: Not a marine pollutant
Special Precautions for User: Avoid generating dust, keep sealed during transport, protect against physical damage
Safety, Health, Environmental Regulations: Not subject to special regulations under REACH, OSHA, TSCA, or other key chemical inventories
Labelling: Eye and skin irritant for workplace labeling
Other National/International Regulations: Subject to normal chemical workplace controls and waste processing laws
Chemical Inventory Listing: Listed on TSCA, EINECS, DSL, AICS, and other key international inventories
Restrictions: None identified at the level of normal laboratory, industry, or food additive use
User Obligations: Ensure staff read and understand MSDS prior to use, comply with training for safe handling
