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West Ujimqin Banner, Xilingol League, Inner Mongolia, China
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Product Name: L-Citrulline DL-Malate
Chemical Formula: C10H19N3O8 for 2:1 ratio, C7H13N3O5 for 1:1 ratio
Synonyms: Citrulline Malate, 2:1 or 1:1 formulations
Recommended Use: Food supplement ingredient, nutraceuticals, sports nutrition
Manufacturer Information: Available from reliable chemical suppliers, typically with offices in North America, Europe, or Asia
Emergency Contact: Local poison control center, supplier emergency hotline
Classification: Not classified as hazardous according to GHS; dust can irritate respiratory system
Signal Word: None
Hazard Statements: Dust may cause mechanical irritation to eyes and respiratory system
Precautionary Statements: Avoid breathing dust, use with adequate ventilation, wash hands thoroughly after handling
Potential Health Effects: Eyes may redden or itch; inhalation may lead to mild coughing
Environmental Hazards: Not hazardous to the environment when used responsibly
Label Elements: None required for non-hazardous materials, but clear labeling prevents misuse
Main Ingredient: L-Citrulline DL-Malate
CAS Number: 372-75-8 (Citrulline), 617-48-1 (DL-Malic Acid)
Purity: Usually over 98% for supplement grade
Proportion: Typically 2:1 citrulline to malate, or 1:1 depending on supplier
Impurities: Trace amounts of moisture, residual solvents under strict control
Physical Appearance: White, crystalline powder, odorless or with slight scent
Inhalation: Remove person to fresh air, keep comfortable, get medical help if cough persists
Skin Contact: Gently wash with soap and plenty of water, remove contaminated clothing
Eye Contact: Rinse cautiously with clean water, remove contact lenses, keep rinsing if irritation continues
Ingestion: Rinse mouth, drink water for dilution, seek professional advice for large quantities
Symptoms: Redness, sneezing, mild coughing, minor irritation
Immediate Medical Care: Not typically required, but consult a healthcare provider for persistent or concerning symptoms
Suitable Extinguishing Media: Use water spray, dry powder, foam, or CO2 for surroundings
Unsuitable Extinguishing Media: Avoid high-pressure water jets
Specific Hazards: Fine powders can form explosive dust-air mixtures; heat decomposes the compound, releasing small amounts of nitrogen oxides and carbon oxides
Protective Equipment: Firefighters should wear appropriate full-body gear and SCBA
Other Information: Cool nearby containers exposed to heat with water mist, avoid inhaling combustion gases
Personal Precautions: Wear dust mask, gloves, eye protection to prevent irritation
Environmental Precautions: Keep material out of watercourses or drains
Spill Containment: Sweep or vacuum spillage into containers, avoid generating airborne dust, ventilate area
Cleanup Procedures: Use non-sparking tools, place waste in properly labeled drum, wash area with plenty of water
Disposal: Dispose as standard non-hazardous laboratory waste unless otherwise regulated
Handling: Wear gloves, safety goggles, dust mask in environments with poor ventilation; keep powder in closed systems
Hygiene: Wash hands and exposed skin before eating, drinking, or smoking; prevent contact with eyes and mucous membranes
Storage Conditions: Store in cool, dry, and well-ventilated place; use sealed, labeled containers; avoid humidity which clumps powder
Segregation: Keep away from incompatible chemicals like strong acids or oxidizers; separate from foodstuffs in warehouses
Shelf Life: Can exceed two years if kept dry and cool in original packaging
Occupational Exposure Limits: No workplace exposure standard established; handle as nuisance dust (10 mg/m³ for total dust, 3 mg/m³ respirable fraction recommended)
Engineering Controls: Use local exhaust ventilation or general ventilation to maintain airborne dust below exposure limits
Personal Protection: Wear safety glasses, dust mask (N95 or better), gloves (nitrile, latex, or PVC)
Monitoring: No standard environmental monitoring required for routine use; adjust PPE based on dustiness of application
Environmental Precautions: Collect dust using HEPA-filter equipment, prevent powder escape during transfer or filling operations
Appearance: White to off-white crystalline powder
Odor: Nearly odorless
Solubility: Soluble in water, insoluble in organic solvents
pH (1% Solution): Acidic, roughly 3.0 - 3.5, varies with formulation
Melting Point: Decomposes above 170°C
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable under normal conditions
Vapor Pressure: Negligible at room temperature
Density: Around 1.45–1.6 g/cm³ depending on hydration level
Other Properties: Stable under recommended conditions; not hygroscopic but can absorb moisture if left open
Chemical Stability: Stable at room temperature in sealed packaging
Incompatible Materials: Strong acids, strong bases, oxidizers
Hazardous Reactions: No dangerous reactions known during storage or use
Decomposition Products: Nitrogen oxides, carbon oxides released at elevated temperatures during fire
Conditions to Avoid: Moisture, excessive heat, direct sunlight
Acute Toxicity: Animal studies indicate extremely low acute toxicity; LD50 estimated >3900 mg/kg for rats
Irritation: Dust may irritate eyes, nose, throat, skin after prolonged or repeated exposure
Sensitization: No evidence of skin or respiratory sensitization in available studies
Chronic Toxicity: No adverse effects reported with long-term use in human studies at recommended dose
Carcinogenicity, Mutagenicity, Reproductive Toxicity: No evidence in animal or human data
Relevant Routes of Exposure: Ingestion, inhalation, dermal, ocular
Target Organs: None specifically identified
Ecotoxicity: Not classified as environmentally hazardous; readily biodegradable
Aquatic Toxicity: No significant harm at predicted concentrations, dilution in watercourses rapid
Persistence and Degradability: Product degrades to natural amino acids and organic acids in soil and water
Bioaccumulative Potential: Very low, unlikely to build up in food chain
Mobility in Soil: High solubility, leaches rapidly, not persistent
Other Adverse Effects: Unlikely to cause long-term environmental issues under normal handling
Product Disposal: Dispose of as non-hazardous chemical waste according to local regulations
Contaminated Packaging: Rinse, destroy or recycle if possible; dispose in licensed landfill or by incineration if permitted
Methods of Disposal: Landfill or incinerate with municipal solid waste management; avoid discharge into drains or surface water
Special Precautions: Follow any regional requirements for food ingredient byproducts
Waste Codes: Not regulated as hazardous waste by US or EU standards
Land (ADR/RID): Not regulated as a dangerous good
Maritime (IMDG): Not regulated; ship as general cargo
Air (IATA): Not regulated for air transport; ensure packaging prevents dust escape
UN Number: None assigned
Packaging Requirements: Use well-sealed, moisture-proof containers; label clearly
Special Precautions: Ensure packaging remains sealed, store away from chemicals in transit
Labeling: Not classified as hazardous under US OSHA Hazard Communication, EU CLP Regulation, or GHS
Inventory Status: Listed on TSCA (US), EINECS (EU), DSL (Canada), ENCS (Japan)
Food Regulations: Permitted as food ingredient/dietary supplement in many regions, subject to GMP controls
Other Restrictions: Follow national import/export rules for food and chemical safety
Worker Safety: Covered by general workplace dust and hygiene regulations; training in powder handling reduces risk
Community Right-to-Know: Not subject to SARA Title III or California Proposition 65
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
