Butyl Methacrylate - Materials / Alfa Chemistry

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Butyl Methacrylate

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Catalog Number

ACMA00017316

Product Name

Butyl Methacrylate

Category

Polymers

Description

N-butyl methacrylate appears as a clear colorless liquid. Flash point 130°F. Less dense (7.5 lb / gal) than water and insoluble in water. Hence floats on water. Vapors heavier than air. Used to make resins adhesives, and oil additives.;Liquid;COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

IUPAC Name

butyl 2-methylprop-2-enoate

Molecular Weight

142.2g/mol

Molecular Formula

C8H14O2;CH2C(CH3)COO(CH2)3CH3;C8H14O2

Canonical SMILES

CCCCOC(=O)C(=C)C

InChI

InChI=1S/C8H14O2/c1-4-5-6-10-8(9)7(2)3/h2,4-6H2,1,3H3

InChI Key

SOGAXMICEFXMKE-UHFFFAOYSA-N

Boiling Point

326.3 to 338.9 °F at 760 mm Hg (NTP, 1992);160.0 °C;160 °C;163 °C

Melting Point

less than -58 °F (NTP, 1992);-75.0 °C;freezing point: less than -75 °C;-50 °C

Flash Point

126 °F (NTP, 1992);126 °F (52 °C) (open cup);50 °C c.c.

Density

0.8975 at 68 °F (USCG, 1999);0.8936 g/cu cm at 20 °C;Relative density (water = 1): 0.9

Solubility

Insoluble (NTP, 1992);0.01 M;Very soluble in ethyl ether, ethanol;In water, 800 mg/L at 25 °C;Solubility in water, g/100ml at 25 °C: 0.08 (very poor)

Application

Butyl methacrylate serves as a critical component in a vast array of industrial applications due to its versatility and unique properties. This colorless liquid, recognized for its role as a plasticizing methacrylate monomer, acts as an essential building block in the synthesis of methacrylate polymers. It is prominently used in the production of methacrylic resins, offering exceptional weather resistance, high gloss, color retention, and durability. In the realm of copolymer compositions, it contributes intermediate glass transition and hardness values, with a glass transition temperature (Tg) of 20°C. Beyond its function in creating acrylic resins, butyl methacrylate is integral in various end-use products, including solvent coatings, adhesives, and oil additives. It also plays a significant role in the development of emulsions for textile, leather, and paper finishing, as well as in the formation of dental composite materials and artificial nails due to its superior cross-linking capabilities.

Color/Form

Colorless liquid

Complexity

127

Covalently-Bonded Unit Count

EC Number

202-615-1;618-468-5

Exact Mass

142.09938g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1018

Log P

2.88 (LogP);log Kow = 2.88;2.26-3.01

MeSH Entry Terms

butyl methacrylate monomer

Monoisotopic Mass

142.09938g/mol

NSC Number

20956

Odor

Faint characteristic odor of esters

Other Experimental

Readily polymerized;Liquid water interfacial tension: 35 dynes/cm = 0.035 N/m at 20 °C; Heat of polymerization: -180 BTU/lb = -100 cal/g = -4.2X10+5 J/kg; Reid vapor pressure: low;Liquid heat capacity: 0.460 BTU/lb-F at 70 °F; Liquid thermal conductivity: 1.048 BTU-in/hr-sq ft-F at 70 °F; Saturated vapor density: 0.00203 lb/cu ft at 70 °F;It weighs about 7.5 lb/gal.;Henry's Law constant = 4.96X10-4 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 2.3X10-11 cu cm/molec-sec at 25 °C (est)

Refractive Index

Index of refraction: 1.4240 at 20 °C/D

Rotatable Bond Count

RTECS Number

OZ3675000

UNII

R5QX287XXU

UN Number

2227;2227;2227;2227

Vapor Density

4.9 (NTP, 1992) (Relative to Air);4.8 (Air = 1);Relative vapor density (air = 1): 4.9

Vapor Pressure