SYNONYMS：

3-Chlorophthalic acid   anhydride; 1,3-Isobenzofurandione,4-chloro-;  

4-Chloro-2-benzofuran-1,3-dione;

4-Chloroisobenzofuran-1,3-dione

C₈H₃ClO₃    182.56

CAS-No.: 117-21-5

EINECS-NO.: 204-179-8

QUALITY SPECIFICATIONS

 Description

White powder   or block

Visual

 Assay, min

≥ 98%

HPLC   - a/a

 Melting Point

123～126℃

Standard   M.P. capillary method

Loss on drying, max

≤ 1.0%

Drying   and weighing method

Content   of 4-hlorophthalic anhydride, max

≤ 0.5%

HPLC-area

TRANSPORT REGULATIONS

and STORAGE CONDITIONS

Without main danger (Common goods).

The substance is not subject to IATA-DGR.

Keep containers tightly closed when not in use.

Stored   in the dry and ventilated place at room temperature, keep away from   incompatible substances.

Shelf Life: 60 Months.

USE

Raw materials for   synthesizing polyimide; It is also used as an intermediate in the production   of medicine, pesticide and dye.