聚（甲基丙烯酸异丁酯）

Description

Poly(isobutyl methacrylate) · CAS 9011-15-8 · C8H14O2. UNII V11534UYZ0. Boiling Point: 311 °F at 760 mmHg (NTP, 1992); Boiling Point: 155 °C; Melting Point: Freezing pt: -61 °C.

Identification

CAS Registry Number	9011-15-8
PubChem CID	7352
Molecular formula	C8H14O2
IUPAC name	2-methylpropyl 2-methylprop-2-enoate
UNII (FDA)	V11534UYZ0

Computed Descriptors

Molecular Weight	142.20
XLogP3	2.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	4
Exact Mass	142.099379685
Monoisotopic Mass	142.099379685
Topological Polar Surface Area	26.3
Heavy Atom Count	10
Formal Charge	0

Physical & Chemical Properties

Boiling Point	311 °F at 760 mmHg (NTP, 1992)
Boiling Point	155 °C
Melting Point	Freezing pt: -61 °C
Flash Point	120 °F (NTP, 1992)
Flash Point	35 °C (closed cup)
Flash Point	49 °C (Tag open cup)
Solubility	Insoluble (<1mg/ml) (NTP, 1992)
Solubility	In water, 1300 mg/L at 25 °C
Density	0.8858 g/cu cm at 20 °C
Vapor Pressure	3.63 [mmHg]

Physical description & handling notes

• CBI; Liquid
• Liquid; Has 25 ppm hydroquinone monomethyl ether as inhibitor; [Hawley] Colorless liquid; Insoluble in water; Sensitive to heat, air, and light; [CAMEO] Colorless liquid; Partially soluble in water (2 g/L at 20 deg C); [MSDSonline]
• Liquid
• Miscible with ethanol, ethyl ether
• Insoluble in water
• 0.8858 at 68 °F (USCG, 1999) - Less dense than water; will float

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS Flavoring Agents CIR / INCI: Cosmetic ingredients (Isobutyl Methacrylate) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	0.1% (1 / 1406)

GHS Hazard Classification

GHS notification summary	0.1% (1 / 1406)
Reported hazard statements	H226, H315, H317, H335, H319 (79.1%), H400 (77.4%), H320, H402

Documented Uses

• CIR ingredient: Isobutyl Methacrylate
• Used as a monomer for acrylic resins, in hydrogel contact lenses, and as a water repellant for concrete; [HSDB]
• Concrete can ... be made water repellent by the polymerization of vinyl monomers on the surface
• Not Known or Reasonably Ascertainable
• Information on 2 consumer products that contain Isobutyl methacrylate in the following categories is provided:
• Esterification or transesterification of isobutyl alcohol with either methacrylic acid or methyl methacrylate

Synonyms

Isobutyl methacrylate; 97-86-9; Methacrylic acid, isobutyl ester; 2-Propenoic acid, 2-methyl-, 2-methylpropyl ester; Isobutyl 2-methyl-2-propenoate; 2-METHYLPROPYL METHACRYLATE; Isobutyl alpha-methacrylate; Isobutyl alpha-methylacrylate; DTXSID3025461; Isobutylester kyseliny methakrylove; Propenoic acid, 2-methyl, isobutyl ester; V11534UYZ0; NSC-18607; DTXCID505461; RefChem:1087515; 202-613-0

Frequently Asked Questions

What are the CAS number and molecular formula of Poly(isobutyl methacrylate)?

CAS 9011-15-8; molecular formula C8H14O2; molecular weight — g/mol.

What other names is Poly(isobutyl methacrylate) known by?

Isobutyl methacrylate, 97-86-9, Methacrylic acid, isobutyl ester, 2-Propenoic acid, 2-methyl-, 2-methylpropyl ester, Isobutyl 2-methyl-2-propenoate, 2-METHYLPROPYL METHACRYLATE.

What is the regulatory status of Poly(isobutyl methacrylate)?

Documented regulatory listings: EU Flavoring substances; FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Poly(isobutyl methacrylate) classified as hazardous?

0.1% of GHS notifications report no hazard classification (1 of 1406).

What are the key physical properties of Poly(isobutyl methacrylate)?

Boiling Point: 311 °F at 760 mmHg (NTP, 1992); Boiling Point: 155 °C; Melting Point: Freezing pt: -61 °C; Flash Point: 120 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.