281832

Mesityl oxide

technical grade, 90%

• Synonym(s): 4-Methyl-3-penten-2-one
• Linear Formula: (CH₃)₂C=CHCOCH₃
• CAS Number: 141-79-7
• Molecular Weight: 98.14
• Beilstein: 1361550
• EC Number: 205-502-5
• MDL number: MFCD00008900
• UNSPSC Code: 12352100
• PubChem Substance ID: 24856998
• NACRES: NA.22

Properties

• grade: technical grade
• Quality Level: 100
• Assay: 90%
• form: liquid
• refractive index: n20/D 1.442 (lit.)
• bp: 130 °C (lit.)
• mp: -41.5 °C (lit.)
• density: 0.858 g/mL at 25 °C (lit.)
• SMILES string: C\C(C)=C\C(C)=O
• InChI: 1S/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3
• InChI key: SHOJXDKTYKFBRD-UHFFFAOYSA-N

Description

General description

Zinc chloride-catalyzed condensation of mesityl oxide with ethyl acetoacetate has been reported.

Application

Mesityl oxide has been used:

• in the synthesis of 2,3,4,5-tetrahydro-1,3,3-trimethyldipyrrin, a crucial building block in the rational synthesis of chlorins and oxochlorins
• as neutral marker in the preparation of imidazole-coated capillary column for electrophoresis

Safety Information

• Pictograms: GHS02,GHS06
• Signal Word: Danger
• Hazard Statements: H226,H302 + H312,H315,H319,H331,H335
• Precautionary Statements: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P311 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Inhalation - Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): 87.8 °F - closed cup
• Flash Point(C): 31 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves