New Japan Chemical Co., Ltd.

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Product name RIKACID HH Chemical name Hexahydrophthalic anhydride

Molecular formula (molecular weight) C8H10O3(154) Structural formula

ENCS No. 3 - 2416

CAS No 85-42-7

EINECS No. 201-604-9

TSCA listed Listed

Applications Polyester resin raw material, vinylester resin raw material, epoxy resin hardener

Feature/Function

RIKACID HH (HHPA) is an alicyclic acid anhydride which has excellent characteristics as a polyester alkyd resin raw material or epoxy resin hardener. As it does not contain double bond in molecular formula, it can be a raw material of resins with great weather resistance. When it is used as a raw material of paints or artificial marble, it enhances electric insulation, heat resistance, and chemical resistance. As it is also useful as an epoxy resin hardener which can produce clear and colorless hardened materials, it is used in LED. It is also used as a raw material of resist inks, pharmaceuticals, agricultural chemicals, etc. As it is excellent in impregnating ability, it is used in molding or casting of FRP.

Representative properties

Appearance, shape, etc. White/Glassy Freezing point

(°C) Not less than 34

Color number (Hazen) Not more than 50 Neutralization

value 715 - 735

Acid anhydride equivalent 152 - 158 Iodine value Not more than 1.0

Package form 20 kg can; 220 kg drum

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<About handling of the descriptions herein> Descriptions herein were created based on materials, information, and data that have been obtained to date, but the data, evaluations, risks, etc. described are not warranted at all. In addition, the items described are intended for usual ways of handling, and therefore if the product is handled in a special manner, handle it after taking a safety measure appropriate for the application or usage.