Material Safety Data Sheet for Maleic Resin

Identification

Product Name: Maleic Resin
Chemical Family: Modified Resin
Chemical Name: Maleic Anhydride Modified Rosin Ester
Common Uses: Adhesives, coatings, inks
Manufacturer: [Enter name and contact details]
CAS Number: 8050-26-8 (main component)
Emergency Contact: [Insert emergency phone number]
Recommended Restriction: Industrial use only, not intended for consumer use

Hazard Identification

GHS Classification: Skin Sensitization (Category 1), Eye Irritation (Category 2A), Specific Target Organ Toxicity - Single Exposure (Category 3)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation, may cause allergic skin reaction
Precautionary Statements: Avoid breathing dust, wash thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves and eye protection, if inhaled: remove person to fresh air
Potential Health Effects: Short-term contact results in rashes or redness on skin, vapors can trigger coughing and throat irritation, repeated exposure may sensitize skin, eyes may redden and tear on contact
Pictograms: Exclamation mark

Composition / Information on Ingredients

Maleic Resin: 80–95%
Rosin Ester: 5–20%
Maleic Anhydride: <1%
Other Impurities: Trace amounts of stabilizers, antioxidants present less than 0.2%
CAS Registry Numbers: Maleic Anhydride 108-31-6, Rosin Ester 8050-26-8
Note: Individual batch composition can vary due to supplier, processing differences, or additive selection.

First Aid Measures

Inhalation: Move person to fresh air, seek medical attention if symptoms such as dizziness, coughing, or shortness of breath continue
Skin Contact: Remove contaminated clothing immediately, thoroughly wash affected area with soap and water, apply lotion for irritation, get medical help if allergic sensitization develops
Eye Contact: Rinse eyes gently with plenty of water for minimum 15 minutes, lift eyelids to ensure complete removal, consult healthcare professional if redness or discomfort persist
Ingestion: Do not force vomiting, rinse mouth with water, call poison center or physician for guidance, provide medical records if known allergies

Fire-Fighting Measures

Suitable Extinguishing Media: Water fog, foam, dry chemical powder, or carbon dioxide
Unsuitable Extinguishing Media: Direct water jets on molten material can spread fire
Special Hazards: Material burns with dense smoke generating hazardous fumes such as carbon monoxide, carbon dioxide, and organic vapors, dust clouds can ignite
Protective Equipment: Firefighters should use self-contained breathing apparatus and full protective clothing
Precautions: Containers may burst in intense heat, cool with water spray at safe distance

Accidental Release Measures

Personal Precautions: Ensure adequate ventilation, use personal protective equipment, avoid inhaling dust or fumes, restrict entry to spill area
Environmental Precautions: Prevent bulk spill from entering drains or surface water, notify environmental authorities in case of major release
Containment Methods: Stop discharge if safe, surround with absorbent material such as sand
Cleanup Methods: Collect solid or viscous residue with non-sparking tools, transfer to labeled disposal container, clean area with soap and water, avoid dry sweeping

Handling and Storage

Handling: Work in well-ventilated space, avoid generating dust, minimize exposure to skin and eyes, do not eat or drink while handling, wash hands before leaving area
Storage: Store in tightly closed containers in cool, dry locations away from heat and direct sunlight, separate from strong oxidizers, acids, and bases, storage temperature should not exceed 35°C
Incompatibilities: Strong oxidizers, acids, reducing agents
Other Considerations: Use proper labeling and keep away from food, beverages, and animal feed

Exposure Controls and Personal Protection

Engineering Controls: Local exhaust ventilation or general dilutions ventilation sufficient for most handling situations, use explosion-proof equipment where large quantities or dust present
Exposure Limits: No established OSHA PEL or ACGIH TLV for Maleic Resin, for maleic anhydride keep exposure below 0.1 ppm TWA (as recommended by ACGIH)
Personal Protection: Wear chemical-resistant gloves (such as nitrile or neoprene), safety goggles or face shield, long sleeve clothing, approved respirator in dusty or poorly-ventilated work, use barrier creams for sensitive skin
Hygiene Measures: Do not smoke, eat, or drink in work area, remove contaminated clothing promptly, launder before reuse
Environmental Controls: Maintain air emissions below regulatory limits through filtration and capture systems

Physical and Chemical Properties

Physical State: Solid
Appearance: Pale yellow to amber beads, flakes, or granules
Odor: Mild resinous, possibly faint aromatic smell
Odor Threshold: Not established
pH: Not applicable
Melting Point/Softening Point: 80–140°C
Boiling Point: Decomposes before boiling
Flash Point: >200°C (closed cup)
Flammability: May burn on strong heating
Explosion Limits: Not available
Vapor Pressure: Negligible at ambient temperature
Specific Gravity: 1.00–1.20
Solubility: Insoluble in water, soluble in alcohols, esters, aromatic hydrocarbons
Partition Coefficient (n-octanol/water): Not determined
Autoignition Temperature: >450°C
Decomposition: Above 200°C with emission of fumes
Viscosity: Not determined for solid

Stability and Reactivity

Chemical Stability: Stable under recommended storage and use
Reactivity: Unreactive under normal processing conditions
Hazardous Reactions: Exothermic reaction possible with strong oxidizers or acids
Conditions to Avoid: Elevated temperatures, open flames, incompatible materials
Hazardous Decomposition Products: Carbon oxides, hydrocarbons, maleic anhydride fumes, irritating smoke
Polymerization: Will not polymerize spontaneously

Toxicological Information

Acute Toxicity: Low oral and dermal acute toxicity based on available animal data, can irritate mucous membranes
Chronic Effects: Long-term exposure may sensitize skin leading to dermatitis, inhalation over extended periods might worsen respiratory issues
Symptoms: Coughing, shortness of breath, rash, redness, eye watering
Carcinogenicity: Not classified as carcinogenic under IARC, NTP, OSHA
Mutagenicity: No reproductive or mutagenic effects reported in animal studies
Other Health Effects: Asthma may worsen if exposed to dust or fumes

Ecological Information

Ecotoxicity: Maleic resin shows low acute toxicity to aquatic life, can impact water quality through chemical oxygen demand if released in large spills
Persistence and Degradability: Resin remains stable in environment over time, slow biodegradation under natural conditions
Bioaccumulation: Not expected to bioaccumulate due to poor solubility and large molecular size
Mobility: Low in soil and sediment, mostly remains as solid fragments
Other Adverse Effects: Spilled material forms floating films in water, interfering with oxygen transfer in waterways

Disposal Considerations

Waste Treatment Methods: Collect scrap and unused resin into labeled containers, send for incineration or landfill following local regulations
Hazardous Waste Code: Not classified as hazardous waste under US RCRA, but specific resin additives could affect status
Container Disposal: Empty drums and bags contain residue, triple rinse and puncture before recycling or disposal
Precautions for Disposal: Never dump in drains, open land, or uncontrolled locations, consult licensed waste contractor
Regional Requirements: Comply with national and regional waste codes, documentation required for large volumes

Transport Information

UN Number: Not assigned under UN model regulations
Proper Shipping Name: Not regulated as hazardous for land, sea, or air transport
Transport Hazard Class: Not classified
Packing Group: Not applicable
Special Precautions: Protect packaging from physical damage, keep dry during transit, avoid loading near foodstuffs
Environmental Hazards: No, but prevent release during transport
Transport Labels: Not required for standard resin forms

Regulatory Information

OSHA Status: Not listed as hazardous under US OSHA regulations
TSCA Inventory: Components registered on TSCA inventory
REACH Status: Components either pre-registered or exempt under REACH for use in Europe
SARA Title III: Does not contain listed Extremely Hazardous Substances above threshold
Labeling Requirements: Classified under GHS for skin and eye irritation
Other Regulatory Lists: Not listed on California Prop 65, not present on major international restriction lists
WHMIS Classification (Canada): D2B – Skin/Eye Irritant
International Inventories: Contact local authority for compliance in country-specific chemical lists