Dehydroacetic acid

• Catalog No.: 689319
• CAS Number: 520-45-6
• M. F.: C8H8O4
• M. W.: 168.14672
• Purity: 99.0-100.3% (w/w) (T)

SYNONYMS

• Title: 脱氢乙酸
• IUPAC name: 3-acetyl-6-methyl-3,4-dihydro-2H-pyran-2,4-dione
• IUPAC Traditional name: dehydroacetic acid
• Synonyms: 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid δ-lactone; 3-乙酰基-6-甲基-2,4-吡喃二酮

DATABASE IDS

• MDL Number: MFCD00066709
• EC Number: 208-293-9
• CAS Number: 520-45-6
• Beilstein Number: 6129

PROPERTIES

• Empirical Formula (Hill Notation): C8H8O4
• Grade: Lonza quality
• Purity: 99.0-100.3% (w/w) (T)
• Apperance: crystalline
• Apperance: powder
• Boiling Point: 270 °C(lit.)
• Flash Point: 157 °C
• Flash Point: 314.6 °F
• Melting Point: 109.0-111.0 °C (opt. transm.)
• Melting Point: 111-113 °C(lit.)
• GHS Signal Word: Warning
• GHS Hazard statements: H302
• European Hazard Symbols: Harmful (Xn)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Faceshields, Gloves
• Risk Statements: 22
• RTECS: UP8050000
• German water hazard class: 1

DETAILS

Description (English)

Analysis Note
transparence: >63.2%; 420 nm, 10 mm 1g/30 mL MeOH

Description (简体中文)

Analysis Note
透明度：>63.2%；420nm，10mm 1g/30mL MeOH