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Technical specification

Phthalic Anhydride, technical grade A-type
(orthoxylene grade)
    Top grade value First grade value Method
1 Appearance White flakes or  powder or melt White flakes or
powder or melt.
Yellowish or
pinkish shade
allowable.
AM-1004
2 CAS no. 85-44-9
3 EEC no. 201-607-5
4 Molecular formula C8H4O3
5 Formula weight, g/mol 148
6 Active material content, % 100
7 Flash point, ºC 152
8 Total acid number, mg KOH/g 754-762 AM-1353
9 Mass fraction of phthalic anhydride, % min 99,9 99,7  
10 Crystallization point, °C min 130,9 130,6 AM-1000
11 Mass fraction of ferric (iron) compound,
% max
0,0002 0,003  
12 Mass fraction of phthalic acid not detected N/A  
13 Mass fraction of maleic anhydride,
% max
0,05 N/A  
14 Mass fraction of ash, % max 0,002 N/A  
15 Colour of melt (Pt/Co scale) 15 50  
Colour of melt (Pt/Co scale)
(For powder and flake only
after 2 months of storage)
20 80 AM-1060/63
16 Colour stability on heating (Pt/Co scale) (90 min @ 250°C ), Hasen units, no more 40 200  
Colour stability on heating (Pt/Co
scale) (90 min @ 250°C) (For
powder and flake only - after 2
month of storage), Hasen units, no more
60 N/A  

Shipment in small sacks palletized at 1 Mt stack or in 250/500 kg big bags.

Last update: Mon Jan 30 18:47:49 CET 2017


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