Understanding L-Carnosine through a Thorough Look at MSDS Information

Identification

Chemical Name: L-Carnosine
Synonyms: beta-Alanyl-L-histidine
Molecular Formula: C9H14N4O3
Molecular Weight: 226.23 g/mol
Physical Description: White or off-white crystalline powder, often tasteless, odorless
Common Uses: Dietary supplement, antioxidant in health products, research compound in biochemistry
CAS Number: 305-84-0

Hazard Identification

Hazard Classification: Not considered hazardous under GHS guidelines for typical handling
Main Hazards: Dust may irritate eyes and respiratory tract; ingestion or skin contact in moderate quantities rarely causes harm
Signal Word: None assigned
Pictogram: None required
Precautionary Statements: Avoid raising dust; wash hands thoroughly after handling

Composition / Information on Ingredients

Main Ingredient: L-Carnosine at no less than 98% purity
Impurities: Residual solvents and trace inorganic salts sometimes present at less than 2% combined
Allergens: No major known allergens, but synthetic routes could impact sensitivity for those prone

First Aid Measures

Inhalation: Move to fresh air; get medical attention if unusual coughing or breathing issues continue
Skin Contact: Wash exposed area thoroughly with soap and water; remove contaminated clothing
Eye Contact: Rinse eyes gently with plenty of water for several minutes; check for lingering irritation
Ingestion: Rinse mouth with water; if adverse effects persist, see medical staff
Supporting Facts: No severe acute reactions documented in standard lab exposure scenarios

Fire-Fighting Measures

Flammability: L-Carnosine itself will not ignite easily under normal conditions
Suitable Extinguishing Media: Water spray, foam, carbon dioxide, or dry chemical powders
Specific Hazards: Thermal decomposition may give off nitrous oxides and carbon oxides
Personal Protection for Firefighters: Self-contained breathing apparatus and protective clothing
Advice Based on Experience: Keep dust through static control and minimize accumulation near ignition sources

Accidental Release Measures

Personal Precautions: Wear dust mask, safety goggles, and gloves; keep unprotected people away
Environmental Precautions: Avoid washing large quantities into drains or waterways
Methods for Cleanup: Sweep up spill with minimal dust, transfer material to secure container, use damp paper towels for residues
Supporting Experience: Good ventilation and prompt cleaning make the process much safer and easier

Handling and Storage

Safe Handling: Use under local exhaust or within a fume hood when possible; prevent dust buildup
General Hygiene: Wash hands after working, keep away from food preparation or eating areas
Storage Conditions: Store in tightly sealed containers, in a dry, well-ventilated, cool place; protect from strong light and heat
Incompatibilities: Keep away from strong acids, bases, and oxidizing agents

Exposure Controls and Personal Protection

Workplace Controls: Local exhaust, dust extraction, or fume hood keeps air clean
Eye Protection: Safety glasses or goggles
Skin Protection: Lab coats and nitrile gloves minimize direct contact risk
Respiratory Protection: Disposable dust mask if airborne concentrations exceed trivial levels
Eating and Drinking: Never handle the product near food or drinks
Supporting Reality: In academic and industrial settings, these simple steps often prevent the most common incidents

Physical and Chemical Properties

Appearance: White or nearly white crystal or powder
Odor: Odorless
Solubility: Slightly soluble in water, almost insoluble in ethanol
pH: Around 7.0 (0.1% aqueous)
Melting Point: Over 250°C, decomposes rather than melts cleanly
Boiling Point: Not applicable for solids of this nature
Vapor Pressure: Negligible at room temperature
Density: About 1.35 g/cm³

Stability and Reactivity

Chemical Stability: Remains stable at room temperature in dry conditions
Reactive Conditions: Prolonged moisture exposure or strong oxidizers may cause breakdown
Hazardous Decomposition: Combustion can yield noxious gases such as carbon monoxide, carbon dioxide, and nitrous gases
Polymerization: Not expected to occur under normal circumstances

Toxicological Information

Acute Toxicity: Very low; high oral doses in animals do not usually cause harm
Chronic Exposure: No evidence suggests cancer, mutations, or reproductive impacts from typical use
Inhalation Effects: Dust may cause mild respiratory irritation in sensitive individuals
Dermal Effects: Repeated and prolonged contact uncommon, but mild irritation could develop
Ingestion: Intended use as dietary supplement involves direct consumption; rare reports of minor digestive discomfort
Sensitization: Documented allergies extremely rare

Ecological Information

Ecotoxicity: No major risks known at usual environmental concentrations
Persistence and Degradability: Degrades slowly within biological systems; not persistent in open ecosystems
Bioaccumulation: Unlikely; low potential for accumulation in aquatic food chains
Mobility in Soil: Soluble portion can move with water but expected to break down over time

Disposal Considerations

Safe Disposal: Small quantities may go with normal lab chemical waste following institutional guidelines
Larger Quantities: Preferably managed by waste contractors trained in chemical disposal
Advice Backed by Experience: Minimizing waste generation through careful portioning avoids unnecessary disposal costs and complexity

Transport Information

Classification: Not classified as hazardous for transport by road, air, or sea
Packaging: Standard sealed containers suffice
Precautions: Avoid damage to containers and water ingress during transport; keep out of direct sunlight and high humidity

Regulatory Information

Global Regulations: Not listed as a controlled substance; generally recognized as safe (GRAS) for specific dietary uses
Labeling Guidance: Minimal hazard symbols required under most national and international rules
Personal Note: Always check local standards, since regional specifics may shift unexpectedly as standards evolve