Maleic Anhydride

2. Standard (GB/T3676-2008)

Item

Top grade

Grade 1

Content (As C4H2O2)/ %

≥99.5

≥99.0

Colourity(platimum - cobalt)

≤25

≤50

Crystallization point /°C

≥52.5

≥52.0

Residue on ignition / %

≤0.005

≤0.005

Iron content (as Fe) / (pg/g)

≤3

-

Melting colourity(platimum - cobalt)

As agreed

As agreed

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