Histry Chem

Knowledge

Material Safety Data Sheet: Dimethyl Phthalate (DMP)

Identification

Product Name: Dimethyl Phthalate
Chemical Formula: C10H10O4
CAS Number: 131-11-3
Synonyms: DMP, Phthalic acid dimethyl ester
Recommended Use: Plasticizer, solvent, mosquito repellent ingredient
Manufacturer Info: Industry contact details available upon request

Hazard Identification

Classification: Not classified as hazardous under GHS, but caution matters especially with frequent exposure
Health Hazards: Can irritate eyes and respiratory tract, some cases of skin irritation after prolonged contact
Environmental Hazards: May impact aquatic environments when large amounts contaminate water sources
Signal Word: None under normal classification, but personal vigilance pays off
Hazard Statements: Irritation possible with repeated skin contact, vapor may cause mild drowsiness in unventilated spaces

Composition / Information on Ingredients

Chemical Name: Dimethyl Phthalate
Concentration: 99% or higher in pure product
Impurities: Less than 1% unknown trace elements
Molecular Weight: 194.19 g/mol
Formula: C10H10O4

First Aid Measures

Eye Contact: Rinse immediately with clean water for several minutes, seek medical help if irritation persists
Skin Contact: Wash with soap and water, remove contaminated clothing
Inhalation: Move to fresh air, deep breaths, get medical attention if feeling unwell
Ingestion: Rinse mouth, drink water if conscious, do not induce vomiting, call for medical advice

Fire-Fighting Measures

Suitable Extinguishing Media: Use foam, dry powder, or carbon dioxide extinguishers
Specific Hazards: Gives off toxic fumes like phthalic anhydride and carbon oxides when burning
Protective Equipment: Wear self-contained breathing apparatus and full protective gear
Special Procedures: Stay upwind, avoid inhalation of heated vapors, keep run-off out of drains and sewers

Accidental Release Measures

Personal Precautions: Wear gloves, well-fitting goggles, suitable respiratory protection
Environmental Precautions: Prevent further leakage or spillage if safe, keep away from watercourses
Clean-Up Methods: Soak up with absorbent material like sand or earth, shovel into containers, dispose as hazardous waste

Handling and Storage

Handling: Use decent local ventilation, avoid direct skin or eye contact, wash hands often
Storage: Store in tightly closed containers in cool, dry, well-ventilated places away from heat or ignition sources
Compatibility: Keep apart from strong oxidizing agents, acids, and open flames
Others: Label containers clearly, keep away from food and drink

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established threshold limits for DMP; minimize repeated exposure
Engineering Controls: Provide exhaust ventilation or other engineering controls to keep airborne levels low
Personal Protective Equipment: Chemical-resistant gloves, eye protection, protective clothing for frequent use
Respiratory Protection: Wear respirator if vapor/mist concentrations increase above comfort threshold
Hygiene Measures: Wash hands before eating, drinking, or smoking, change out of contaminated clothing

Physical and Chemical Properties

Appearance: Clear, colorless oily liquid
Odor: Slight, sweet odor
Melting Point: 1°C
Boiling Point: 282°C
Flash Point: 146°C (closed cup)
Vapor Pressure: 0.003 mm Hg at 25°C
Solubility: Miscible with common organic solvents, low in water
Density: 1.19 g/cm³ at 20°C
Viscosity: Low viscosity liquid

Stability and Reactivity

Stability: Chemically stable under standard use and storage conditions
Hazardous Reactions: Avoid mixing with strong oxidizers; builds up pressure when heated in sealed containers
Decomposition Products: Gives off carbon monoxide, carbon dioxide, and other organics on burning
Polymerization: Does not undergo hazardous polymerization under normal conditions

Toxicological Information

Acute Toxicity: Low acute toxicity via oral or dermal routes, LD50 (oral, rat) ~6800 mg/kg
Skin and Eye Contact: May cause slight to moderate irritation after repeated exposure
Respiratory Effects: Inhalation of mist or vapor may lead to mild headache, dizziness
Chronic Exposure: Prolonged, high-level exposure can cause symptoms like skin dryness, nausea, slight CNS effects
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, or OSHA
Other Health Effects: Not known to cause reproductive toxicity, though cautious handling always remains wise in chemical environments

Ecological Information

Aquatic Toxicity: Harmful in quantity to aquatic organisms, especially with continual low-level release
Persistence and Degradability: Slowly degrades in soil and water; bioconcentration in plants and animals tends to be low
Bioaccumulative Potential: Not likely to bioaccumulate significantly
Mobility: Moderate mobility in environment, detectably soluble in water
Other Environmental Effects: Long-term build-ups in sediment may cause subtle changes in local ecologies

Disposal Considerations

Disposal Methods: Incinerate in approved facility, do not dispose in regular trash or down household drains
Container Disposal: Triple-rinse empty containers, surrender to licensed processor
Precautions: Follow local environmental authority guidance, avoid uncontrolled release
Special Instructions: Small spills absorb and bag; large quantities require waste handler trained for chemical hazards

Transport Information

UN Number: Not regulated for ground, air, or sea transport in most regions
Shipping Name: Dimethyl Phthalate
Hazard Class: Not regulated; consider best practice, use sturdy containers
Packing Group: Not required
Transport Precautions: Secure containers upright, away from sharp objects or heat sources
Spill Management: Have absorbent material handy for leaks during transport

Regulatory Information

TSCA Status: Listed on US TSCA inventory
REACH Status: Registered under EU REACH for industrial uses
SARA Title III: Not listed as Extremely Hazardous Substance
RCRA Status: Not listed as hazardous waste but follow chemical disposal laws
Labeling: Required warnings for workplace safety, always follow relevant country-specific chemical codes
Other Requirements: Reference any applicable state or provincial laws that address chemical handling and personal exposure limits