Hexahydro-4-methylphthalic anhydride， mixture of cis and trans , 98% , 19438-60-9

Synonym(s):
4-Methyl-1,2-cyclohexanedicarboxylic anhydride

CAS NO.：19438-60-9

Empirical Formula: C9H12O3

Molecular Weight: 168.19

MDL number: MFCD00005927

EINECS: 243-072-0

PRODUCT Properties

• Melting point: -29°C
• Boiling point: 120°C (1 mmHg)
• Density: 1.162 g/mL at 25 °C(lit.)
• vapor pressure: 0.23Pa at 25℃
• refractive index: n20/D 1.477(lit.)
• Flash point: >230 °F
• storage temp.: Inert atmosphere,Room Temperature
• solubility: Chloroform (Slightly), Ethyl Acetate (Slightly)
• pka: 4.24[at 20 ℃]
• form: Liquid
• color: Clear
• Water Solubility: REACTS
• Sensitive: Moisture Sensitive
• Stability: Hygroscopic, Moisture Sensitive
• InChIKey: FKBMTBAXDISZGN-UHFFFAOYSA-N
• LogP: -3.95 at 20℃
• CAS DataBase Reference: 19438-60-9(CAS DataBase Reference)
• EPA Substance Registry System: 1,3-Isobenzofurandione, hexahydro-5-methyl- (19438-60-9)

Description and Uses

Methylhexahydrophthalic anhydride (MHHP A) is an epoxy hardener, irritant to skin and mucus membranes. It is included in non-diglycidyl-ether-of-bisphenol- A epoxy resins. It can induce both allergic contact dermatitis and immunologic contact urticaria. MHHP A is structurally close to methyltetrahydrophthalic anhydride (MTHP A), which can also cause sensitization.

Hexahydro-4-methylphthalic anhydride, mixture of?cis?and?trans may be used as an analytical standard for the determination of the analyte in human biological samples by gas chromatography-mass spectrometry (GC-MS).

Safety

• Symbol(GHS): GHS05,GHS08
• Signal word: Danger
• Hazard statements: H317-H318-H334
• Precautionary statements: P261-P272-P280-P284-P302+P352-P305+P351+P338
• Hazard Codes: Xn
• Risk Statements: 41-42/43
• Safety Statements: 22-24-26-37/39
• WGK Germany: 1
• Hazard Note: Irritant
• TSCA: Yes
• HS Code: 29172090