Material Safety Data Sheet (MSDS) for Melamine Hydrobromate

1. Identification

Product Name: Melamine Hydrobromate
Synonyms: 1,3,5-Triazine-2,4,6-triamine hydrobromate
Chemical Formula: C3H6N6•HBr
CAS Number: 13520-48-4
Use: Flame retardant applications, chemical synthesis, plastics industry
Manufacturer: [Manufacturer Name and Address]
Emergency Contact: [Insert Emergency Number and Contact Info]

2. Hazard Identification

GHS Classification: Acute Toxicity (Oral Category 4), Skin Irritation Category 2, Eye Irritation Category 2A
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and serious eye irritation. Dust or decomposition products can irritate the respiratory system. Hazard pictograms display exclamation mark for acute toxicity, skin, and eye irritation.
Precautionary Statements: Avoid breathing dust, wear suitable protective gloves, wash hands after handling, do not eat or drink near material, use only outdoors or in well-ventilated area. Seek medical attention for persistent irritation.

3. Composition / Information on Ingredients

Chemical Name: Melamine Hydrobromate
Common Name: Melamine Hydrobromate
CAS Number: 13520-48-4
Concentration: 98-100%
Impurities: May contain trace amounts of unreacted melamine, hydrobromic acid residues.
Additives: No significant additives known based on standard manufacturing practices.

4. First Aid Measures

Inhalation: Remove from exposure area, seek fresh air, seek medical help if irritation persists, loosen clothing.
Skin Contact: Remove contaminated clothing, wash affected skin with water and mild soap for several minutes, seek advice from a health professional if redness or burning persists.
Eye Contact: Rinse cautiously with water for at least 15 minutes, make sure to remove contact lenses if present and able, continue rinsing, seek immediate medical attention if irritation remains or worsens.
Ingestion: Rinse mouth with water, keep victim at rest, do not induce vomiting, give water to drink if fully conscious, get medical help without delay.

5. Fire-Fighting Measures

Suitable Extinguishing Media: Use foam, dry powder, carbon dioxide, or water spray.
Unsuitable Media: Avoid using water jets directly on the burning material as powder dispersion may result.
Hazardous Combustion Products: Hydrogen bromide, nitrogen oxides, cyanide compounds, bromine gas.
Protective Equipment: Wear self-contained breathing apparatus and full protective gear when tackling fires involving this material.
Firefighting Guidance: Move containers away from fire area if safe to do so, keep cool with water spray to prevent pressure build-up, control runoff.

6. Accidental Release Measures

Personal Protection: Wear dust mask, eye protection, gloves, avoid direct contact and inhalation.
Environmental Precautions: Prevent spillage from entering drains, watercourses, or soil.
Methods for Cleaning Up: Sweep up material without generating dust, use wet methods to minimize dust release, transfer to labeled, sealed container for disposal, ventilate affected area, wash down residue with water if permitted.
Reporting: Follow local regulations for reporting large spills.

7. Handling and Storage

Handling: Work in well-ventilated areas, minimize dust generation and buildup, avoid breathing dust, use with local exhaust ventilation, avoid contact with skin and eyes, do not eat, drink, or smoke near material.
Storage Conditions: Store in tightly closed containers, in a dry, cool, and well-ventilated area, protect against direct sunlight and moisture, separate from incompatible materials such as oxidizing agents and strong acids.
Packaging Materials: Use containers resistant to bromine and hydrobromic acid attack, keep labeling intact and legible.

8. Exposure Controls and Personal Protection

Exposure Limits: No national occupational exposure limits assigned specifically for melamine hydrobromate, follow dust limits (e.g., TWA for nuisance dust: 10 mg/m3)
Engineering Controls: Use process enclosures, local exhaust ventilation, general room ventilation.
Personal Protection: Wear dust mask or respirator with P2 filter, chemical splash goggles, chemical-resistant gloves (nitrile, neoprene), lab coat or chemical-resistant apron, wash thoroughly after handling.
Hygiene Measures: Remove contaminated clothing before reuse, keep food and beverages away, maintain good housekeeping.

9. Physical and Chemical Properties

Appearance: Off-white to pale pink crystalline powder
Odor: Odorless or faint chemical smell
Odor Threshold: Not determined
pH (1% Solution): Slightly acidic
Melting Point/Range: Decomposes above 300°C
Boiling Point: Not applicable (decomposes upon heating)
Flash Point: Not applicable
Explosion Properties: Not explosive under normal conditions
Vapor Pressure: Negligible at 20°C
Solubility: Sparingly soluble in water, more soluble in hot water and dilute acids
Density: 1.70 g/cm³ (estimated)
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not established
Decomposition Temperature: Above 300°C

10. Stability and Reactivity

Chemical Stability: Stable for storage and use under recommended conditions, prone to slow hydrolysis in humid air
Reactivity: Does not react vigorously with commonly used materials
Conditions to Avoid: High temperature, moisture, strong acids and bases
Incompatible Materials: Oxidizing agents, strong acids, alkalis, halogenated compounds
Hazardous Decomposition Products: Hydrogen bromide, bromine, nitrogen oxides, risk of toxic cyanides in fire

11. Toxicological Information

Likely Routes of Exposure: Inhalation of dust, skin and eye contact, ingestion
Acute Effects: Burning sensation in eyes and skin, coughing, sore throat, stomach pain if ingested
Chronic Effects: Repeated or prolonged contact may cause dermatitis, respiratory irritation
Toxicity Data: Oral LD50 (rat): approximately 400-600 mg/kg based on analogous melamine compounds
Sensitization: Not classified as sensitizer
Mutagenicity/Carcinogenicity/Reproductive Toxicity: No relevant data indicate carcinogenicity or mutagenicity at occupational levels; animal studies on melamine suggest possible urinary tract effects on chronic excessive intake

12. Ecological Information

Ecotoxicity: Harmful to aquatic organisms, can cause adverse effects in aquatic environments through persistence and bioaccumulation of bromine compounds
Mobility: Moderately water-soluble, can migrate into groundwater at large-scale release
Persistence and Degradability: Low biodegradability under typical environmental conditions
Bioaccumulative Potential: Not likely, though bromine ion may persist in water
Other adverse effects: Bromide pollution can affect water quality and aquatic ecosystems, potential for toxicity to algae, daphnia, and fish

13. Disposal Considerations

Waste Treatment Methods: Collect in properly labeled, sealed containers, incinerate at authorized waste treatment plants or landfill according to local, state, and federal regulations
Contaminated Packaging: Rinse containers before removal, triple rinse and offer for recycling if available, otherwise dispose as hazardous waste
Disposal Restrictions: Do not discharge to surface waters or sewers, avoid uncontrolled incineration to prevent release of toxic gases
Recommended Disposal Code: EC regulation codes (e.g., 16 03 05 for chemical wastes containing hazardous substances) apply

14. Transport Information

UN Number: Not assigned (check with current local regulations due to classification changes)
Transport Hazard Class: Not classified as dangerous under ADR, RID, IMDG, IATA for smaller quantities, though check for local requirements for toxic/irritant materials
Packing Group: Not classified
Special Precautions: Secure packaging to prevent rupture, transport with material safety data sheet, avoid exposure to extreme heat, handle spills immediately.
Environmental Hazards: Not classified as marine pollutant but prevent release during transport.

15. Regulatory Information

Safety Regulations: Subject to Chemical Hazard Communication Standard, OSHA, EU REACH, CLP regulations depending on region
Label Elements: GHS07: Exclamation mark
Inventory Status: Listed in TSCA (USA), EINECS (EU), ENCS (Japan), AICS (Australia)
Restrictions: May be restricted for use in consumer goods and food contact materials in some regions
Additional Regulations: Refer to local, state, and national legislation for workplace exposure, waste handling, and environmental protection.
Other Requirements: Emergency response plan should exist in workplaces handling significant quantities.