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Merck
CN

08483

Hexahydro-4-methylphthalic anhydride, mixture of cis and trans

analytical standard

Synonym(s):

4-Methyl-1,2-cyclohexanedicarboxylic anhydride

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About This Item

Empirical Formula (Hill Notation):
C9H12O3
CAS Number:
19438-60-9
Molecular Weight:
168.19
NACRES:
NA.24
PubChem Substance ID:
329748589
UNSPSC Code:
12352200
EC Number:
243-072-0
MDL number:
MFCD00005927

Key Documents

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InChI

1S/C9H12O3/c1-5-2-3-6-7(4-5)9(11)12-8(6)10/h5-7H,2-4H2,1H3

InChI key

FKBMTBAXDISZGN-UHFFFAOYSA-N

SMILES string

CC1CCC2C(C1)C(=O)OC2=O

grade

analytical standard

assay

≥98.0% (GC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

refractive index

n20/D 1.473-1.480, n20/D 1.477 (lit.)

density

1.162 g/mL at 25 °C (lit.)

application(s)

environmental

format

neat

Quality Level

100

General description

Methylhexahydrophthalic anhydride, a congener of phthalic anhydride, is utilized in the production of plastics, paints, and electronic components. It can potentially result in allergenic effects on humans upon exposure and cause immunological reactions.

Application

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).

pictograms

Health hazardCorrosion
GHS08,GHS05

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1

Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCBX6052
BCBQ9223V
BCBQ9223

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Marina C Jeppsson et al.
Inhalation toxicology, 21(12), 1013-1020 (2009-09-24)
Methylhexahydrophthalic anhydride (MHHPA) is a reactive, low molecular weight chemical used in products such as plastics, paints, and electronic components. Exposure to MHHPA may lead to work-related airway diseases such as rhinitis, conjunctivitis, and asthma. Twelve subjects employed at a
P Pfäffli et al.
The Analyst, 116(12), 1333-1336 (1991-12-01)
A gas-chromatographic technique using 63Ni electron-capture detection was applied to the determination of 4-methyl-cis-hexahydrophthalic anhydride in the blood of workers occupationally exposed to this airborne agent. The detection limit was 0.24 nmol ml-1. For occupational exposure to between 0.14 and
C H Lindh et al.
Toxicology and applied pharmacology, 153(2), 152-160 (1999-01-08)
Hexahydrophthalic anhydride (HHPA) and methylhexahydrophthalic anhydride (MHHPA) are highly allergenic compounds used in the chemical industry. The aim of this study was to characterize the protein adducts in erythrocytes following exposure to HHPA and MHHPA. Blood and urine samples were

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