Lauryl Methacrylate (LMA)

Brand:
aozun
Code:
2916140090
Synonym:
Dodecyl Methacrylate
Appearance:
Colorless or light yellow transparent liquid
CAS No.:
142-90-5
Molecular Formula:
C16H30O2
Molecular Weight:
254
EINECS:
205-570-6
Solubility:
insoluble in water

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Product Description

Product Description

Lauryl methacrylate (LMA) CAS NO: 142-90-5

Key Specifications & Physical-Chemical Properties

Standard specifications of LMA, customizable for industry needs:

CAS Number: 142-90-5
EINECS Number: 205-570-6
Chemical Formula: C₁₆H₃₀O₂
Molecular Weight: 254.41
Appearance: Colorless to light yellow transparent liquid, no visible impurities
Solubility: Insoluble in water; soluble in alcohols, ethers, ketones
Density: 0.868–0.872 g/mL (25℃)
Melting Point: -7℃ to -13℃
Boiling Point: 142–160℃ (145℃ at standard pressure)
Flash Point: 80℃ (closed cup); >230°F (open cup)
Refractive Index: 1.445–1.455 (20–25℃)
Purity: ≥98.5%
Acid Value: ≤0.3–1.0 mgKOH/g
Moisture Content: ≤0.1–0.2%
Color (APHA): ≤60
Glass Transition Temperature (Tg): -65℃

Core Advantages

Key advantages of LMA as a preferred monomer and additive:

Excellent Flexibility: Improves polymer toughness and flexibility, reducing brittleness.
Low Shrinkage: Reduces curing shrinkage, ensuring product dimensional stability.
Superior Weather & Water Resistance: Enhances long-term stability in outdoor/humid environments.
Good Compatibility: Compatible with most methacrylate, vinyl monomers and polymers.
Low Volatility & Photostability: Reduces processing loss and maintains stability under light.
Versatile Functionality: Acts as reactive diluent, internal plasticizer and polymer monomer.

Application Fields

Key application scenarios of LMA:

1. Polymer Synthesis Industry

Synthesizes poly(lauryl methacrylate) and copolymers for plastics, rubber and elastomers.
Reactive diluent for unsaturated polyester resins (UPR), reducing volatility and odor.
Internal plasticizer to improve polymer flexibility without affecting performance.

2. Coatings & Inks Industry

Enhances flexibility, weather resistance and adhesion of wood/plastic coatings.
Used in UV-curable coatings and varnishes to improve curing efficiency.
Boosts ink fluidity, adhesion and water resistance for clear printing.

3. Adhesives & Sealants Industry

Improves flexibility and bonding strength of UV-curable adhesives.
Enhances toughness and durability of structural and anaerobic adhesives.
Optimizes flexibility and adhesion of pressure-sensitive adhesives.

4. Daily Chemical & Related Industries

Cosmetic raw material (complies with safety standards) for texture and stability.
Synthesized into lubricant additives to improve lubrication performance.

5. Other Industries

Leather/textile finishing agent for softness and water resistance.
Paper coating agent to enhance smoothness and water resistance.
Oilfield chemical (e.g., crude oil pour point depressant) for better recovery.
3D printing monomer to improve product flexibility and mechanical properties.

Frequently Asked Questions (FAQs)

Common questions about LMA CAS 142-90-5:

Q1: What is the difference between LMA and other methacrylate monomers?

A: LMA is a long-chain monofunctional monomer with a 12-carbon lauryl group, offering better flexibility and lower shrinkage than short-chain monomers (e.g., MMA). It focuses on flexibility rather than crosslinking density.

Q2: How to store LMA to avoid polymerization?

A: Store at 2–8℃ in a cool, dry, ventilated area (inert atmosphere), sealed, with polymerization inhibitor (e.g., 300 ppm). Keep away from heat, light, oxidants and initiators. Shelf life: 12 months.

Q3: Is LMA toxic? What safety precautions are needed?

A: LMA is low-toxic (LD50: 12000 mg/kg rats, 25000 mg/kg mice) with mild skin/eye irritation. Wear protective gear, ensure ventilation, rinse contact areas with water, avoid ingestion.