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123463

Sigma-Aldrich

1,2-Cyclohexanedicarboxylic anhydride, predominantly cis

95%

Synonym(s):
Hexahydrophthalic anhydride
Empirical Formula (Hill Notation):
C8H10O3
CAS Number:
Molecular Weight:
154.16
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

95%

form

solid

bp

158 °C/17 mmHg (lit.)

mp

32-34 °C (lit.)

SMILES string

O=C1OC(=O)[C@H]2CCCC[C@@H]12

InChI

1S/C8H10O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h5-6H,1-4H2/t5-,6+

InChI key

MUTGBJKUEZFXGO-OLQVQODUSA-N

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This Item
B4600125733412287
Phthalic anhydride ReagentPlus®, 99%

Sigma-Aldrich

125733

Phthalic anhydride

form

solid

form

solid

form

flakes

form

powder

bp

158 °C/17 mmHg (lit.)

bp

-

bp

284 °C (lit.)

bp

397-400 °C (lit.)

mp

32-34 °C (lit.)

mp

163-166 °C (lit.)

mp

131-134 °C (lit.)

mp

283-286 °C (lit.)

General description

Predominantly cis 1,2-cyclohexanedicarboxylic anhydride (HHPA) is a cyclic anhydride that can be used for a variety of applications such as: plasticizer, rust inhibitor, and a curing agent for epoxy based resins.

Application

HPPA, in combination with triethaylamine (TEA), can be used as a polymerization initiator in the preparation of polyester based resins. It can also be used as a hardener to cure 1,4-butanediol diglycidyl ether which can be used as an epoxy based system for electronic devices.

Pictograms

CorrosionHealth hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Bénédicte Le Crom et al.
The Journal of the Acoustical Society of America, 127(4), 2220-2230 (2010-04-08)
This paper presents a non-destructive, ultrasonic technique to evaluate the quality of bonds between substrates. Shear-horizontally polarized (SH) wave modes are investigated to infer the shear stiffness of bonds, which is necessarily linked to the shear resistance that is a
Leslie C Grammer et al.
Chest, 121(4), 1317-1322 (2002-04-12)
To determine whether the use of respiratory protective equipment would reduce the incidence of occupational asthma due to exposure to hexahydrophthalic anhydride (HHPA). Prospective cohort study. A facility that makes an epoxy resin product requiring HHPA for its manufacture. Sixty-six
Electrical impedance spectroscopy of epoxy systems: The case of 1, 4-butanediol diglycidyl ether/cis-1, 2-cyclohexanedicarboxylic anhydride and triethylamine as initiator.
Nucci AM, et al.
European Polymer Journal, 42(1), 195-202 (2006)
Seema Rosqvist et al.
Scandinavian journal of work, environment & health, 29(4), 297-303 (2003-08-26)
This study investigated the exposure-response relationships of hexahydrophthalic anhydride (HHPA) and methylhexahydrophthalic anhydride (MHHPA) and evaluated the applicability of the total plasma protein adducts (TPPA) of these anhydrides as biomarkers of exposure and risk. In a cross-sectional study of 139
The polymerization products of epoxidized oleic acid and epoxidized methyl oleate with cis-1, 2-cyclohexanedicarboxylic anhydride and triethylamine as the initiator: Chemical structures, thermal and electrical properties.
Nicolau A, et al.
Materials Science and Engineering, C, 30(7), 951-962 (2010)

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