3,3-Dimethylacrylic Acid , 98% , 541-47-9

Synonym(s):
3,3-Dimethylacrylic acid;3-Methyl-2-butenoic acid;3-Methylcrotonic acid;Senecioic acid

CAS NO.：541-47-9

Empirical Formula: C5H8O2

Molecular Weight: 100.12

MDL number: MFCD00004366

EINECS: 208-782-7

PRODUCT Properties

• Melting point: 65-70 °C (lit.)
• Boiling point: 194-195 °C (lit.)
• Density: 0,969 g/cm³
• refractive index: 1.4226 (estimate)
• FEMA: 3187 | 3-METHYLCROTONIC ACID
• Flash point: 93°C
• storage temp.: Keep in dark place,Sealed in dry,Room Temperature
• solubility: Chloroform (Slightly), Methanol (Slightly)
• form: Solid
• pka: pK1:5.12 (25°C)
• color: Off-White to Pale Orange
• Odor: at 1.00 % in propylene glycol. green phenolic dairy
• Odor Type: phenolic
• Water Solubility: Soluble in water, and methanol.
• JECFA Number: 1204
• BRN: 1720305
• InChIKey: YYPNJNDODFVZLE-UHFFFAOYSA-N
• LogP: 1.35
• CAS DataBase Reference: 541-47-9(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Butenoic acid, 3-methyl-(541-47-9)
• EPA Substance Registry System: 2-Butenoic acid, 3-methyl- (541-47-9)

Description and Uses

May be prepared by the action of alkalis or bases on the ester of α-bromoisovaleric acid; by condensation of acetone with malonic acid or bromoacetic ester; by oxidation of mesityl oxide with sodium hypochlorite.

Chemical Intermediates.

Safety

• Symbol(GHS): GHS05,GHS07
• Signal word: Danger
• Hazard statements: H315-H318-H335
• Precautionary statements: P261-P264-P271-P280-P302+P352-P305+P351+P338
• Hazard Codes: Xi,C
• Risk Statements: 37/38-41-34
• Safety Statements: 26-36/37/39-45-27
• RIDADR: UN3261
• WGK Germany: 1
• RTECS: GQ5425000
• F: 21
• TSCA: Yes
• HazardClass: 8
• HS Code: 29161900
• Limited Quantities: 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)