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Chemical Name: M-Phenylenediamine Hydrochloride
Synonyms: 1,3-Benzenediamine Hydrochloride, meta-Phenylenediamine hydrochloride
CAS Number: 529-20-4
Recommended Uses: Intermediate for dyes, chemicals, laboratory reagent
Manufacturer/Supplier: Contact the sourcing laboratory or chemical distributor
Emergency Phone Number: Reference local poison control centers or facility’s emergency desk
Hazard Classification: Acute toxicity (oral, dermal, inhalation), skin corrosion/irritation, serious eye damage/irritation, skin sensitization
Signal Word: Danger
Hazard Statements: Toxic if swallowed, causes skin and serious eye irritation, causes allergic skin reaction, may cause respiratory irritation
Pictograms: Skull and crossbones, exclamation mark, corrosion symbol
Precautionary Statements: Avoid contact with skin and eyes, use protective equipment, do not eat, drink or smoke when handling, wash hands thoroughly after handling, avoid breathing dust or fumes, use only outdoors or in well-ventilated area, keep container tightly closed
Chemical Name: M-Phenylenediamine Hydrochloride
CAS Number: 529-20-4
Content: >98% by weight (purity may vary slightly depending on supplier)
Impurities: Typical commercial grades contain residual moisture, trace synthetic byproducts
Inhalation: Remove victim to fresh air, keep at rest, seek medical attention if symptoms occur, provide oxygen if breathing is difficult
Skin Contact: Immediately remove contaminated clothing, wash skin with copious water and soap for at least 15 minutes, obtain medical advice
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if present, continue rinsing, consult physician
Ingestion: Rinse mouth, seek medical help immediately, do not induce vomiting unless directed by medical professionals
Most Important Symptoms: Irritation, redness, dermatitis, respiratory distress, headache, nausea
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Media: Direct water jet
Hazardous Combustion Products: Hydrogen chloride gas, nitrogen oxides, carbon oxides
Special Protective Equipment: Wear self-contained breathing apparatus, full protective suit
Fire-Fighting Procedures: Evacuate area, approach fire from upwind, contain run-off, use fire-resistant protective equipment
Personal Precautions: Wear appropriate respirator, chemical-resistant gloves, goggles, avoid contact with skin, eyes, and clothing
Environmental Precautions: Prevent entry into sewers or waterways, avoid discharge to environment
Cleanup Methods: Sweep up without creating dust, collect in inert container for disposal, ventilate area, wash spill site after material pickup, use non-sparking tools
Handling: Open containers carefully, prevent formation of dust, use in chemical fume hood, minimize exposure, avoid inhalation and contact
Storage: Store in tightly closed containers, keep in cool, dry, well-ventilated area, separate from incompatible substances such as oxidizing agents, acids, strong bases
Special Precautions: Ensure proper labeling, keep away from ignition and heat sources, do not reuse containers without cleaning
Occupational Exposure Limits: No established ACGIH TLV or OSHA PEL; minimize exposure according to good laboratory practices
Engineering Controls: Use local exhaust ventilation, chemical fume hood, safety shower, eye wash station
Personal Protective Equipment: Chemical-resistant gloves, laboratory coat, splash goggles, face shield for larger operations, NIOSH-approved respirator in case of insufficient ventilation
Hygiene Measures: Wash hands before breaks and after work, do not eat or drink in work area, routinely decontaminate surfaces
Appearance: White to pale yellow crystalline powder
Odor: Slight aromatic
Odor Threshold: Data unavailable
pH: 4 to 6 (aqueous solution)
Melting Point: 173–175°C (decomposes)
Boiling Point: Decomposes before boiling
Flash Point: Not applicable (solid)
Evaporation Rate: Not determined
Flammability (Solid): May be combustible
Vapor Pressure: Negligible at room temperature
Vapor Density: Not applicable
Relative Density: About 1.3 g/cm³
Solubility: Miscible with water, low solubility in alcohol
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Not determined
Decomposition Temperature: Above 173°C
Viscosity: Not applicable
Stability: Stable under standard storage and handling conditions
Reactivity: Reacts with oxidizing agents, acids, strong bases
Hazardous Reactions: May release toxic gases if heated to decomposition, possible polymerization or hazardous byproduct formation with incompatible substances
Hazardous Decomposition Products: Hydrogen chloride, aniline derivatives, nitrogen oxides
Conditions to Avoid: High temperatures, sources of ignition, static discharge, moisture, direct sunlight
Incompatible Materials: Strong oxidizers, acids, alkalis, halogenated compounds
Acute Toxicity: Oral LD50 (rat): 175 mg/kg; harmful or fatal in small quantities
Inhalation: Irritation to respiratory tract, cough, dizziness, nausea possible
Skin Contact: Moderate to severe irritant, sensitizer with repeated exposure
Eye Contact: Risk of serious eye injury, persistent redness and pain
Chronic Effects: Potential allergic reactions, possible mutagenicity, organ toxicity with repeated exposure
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, or OSHA as of latest update
Routes of Exposure: Inhalation, ingestion, dermal, ocular
Symptoms of Exposure: Dermatitis, headache, fatigue, methemoglobinemia in severe cases
Toxicity: Harmful to aquatic organisms, may cause long-term adverse effects in aquatic environments
Persistence and Degradability: Not readily biodegradable, may persist in soil and water
Bioaccumulative Potential: Low potential for bioaccumulation based on available data
Mobility in Soil: Expected to have moderate mobility, may leach with water movement
Other Adverse Effects: Uncontrolled release may cause local environmental harm, avoid large releases to water or soil systems
Methods of Disposal: Handle as hazardous chemical waste, use licensed chemical disposal contractor
Container Disposal: Rinse empty containers thoroughly, treat rinse water as hazardous, remove labels before recycling or disposal
Waste Codes: Refer to local, regional, and national authorities for specific hazardous waste codes
Special Precautions: Do not allow material to enter drains or environment
UN Number: UN 1760
Proper Shipping Name: Corrosive liquid, n.o.s. (contains M-Phenylenediamine Hydrochloride)
Hazard Class: 8 (Corrosive)
Packing Group: II
Label Required: Corrosive
Special Provisions: Avoid temperature extremes during transport, comply with national/international requirements
Environmental Hazards: Harmful to aquatic life, avoid transport in bulk if possible, notify authorities if spill occurs during shipment
OSHA Status: Not specifically regulated under OSHA hazardous chemicals, but meets criteria for hazardous classification
SARA Title III: Not listed as an extremely hazardous substance; check local regulations
TSCA: Listed in US Toxic Substances Control Act inventory
REACH: Registration completed or exemption claimed for laboratory supplies
Canadian DSL/NDSL: May appear on Domestic Substances List; verify with supplier for imported goods
Other Regulations: Handle according to country and state environmental, worker safety, and shipping regulations; comply with laboratory and industry-specific standards for hazardous materials
