Name of indicator;Grade A premium grade
Form;Flakes and white powder
Phthalic anhydride mass fraction, %, not less than;99,9
Crystallization temperature, 0C, not lower;130,9
Iron mass fraction, %, no more;0,0002
Phthalic acid content;missing
Maleic anhydride mass fraction, %, no more;0,05
Ash mass fraction, %, no more;0,002
APHA color of the molten product, Hazen units, not more than:;15
At the output:;
During the warranty period for powder and flakes:;20
During the warranty period for melt:;Not normalized
APHA color of the molten product after heating at 2500C for 90 minutes, Hazen units, not more than:;40
At the output:;
During the warranty period for powder and flakes:;60
During the warranty period for melt:;Not normalized