Phtalic anhydride

Specifications TS RB 500021625.155-2009
Range of application: for the production of plasticizers, alkyd resins, dyestuffs, medical preparations and industrial rubber goods.

bezwodnik kwasu ftalowego

Phtalic Anhydride
GOST 7119-77

 

wzor-largeFormula: С8Н4О3

Application: for production of plasticizers, alkyd resins, dyes, medicines and rubber industries

Properties: “Lakokraska” produces phthalic anhydride from o-xylene grade A, high and first grade
Shelf life – 2 months from the date of manufacture.

Technical specification

Indicator Grade А
High grade I grade
1. Appearance The flakes and powder of white color or melt The flakes and powder of white color or melt  yellowish or pinkish hue is allowed
2. Mass share of phtalic anhydride, %, not lower 99,9 99,7
3. Crystalization temperature, °С, not lower 130,9 130,6
4. Iron mass share, %, no more 0,0002 0,003
5. Content of phthalic acid None not normalized
6. Mass fraction of maleic anhydride,%, no more than 0,05 not normalized
7. Ash content,%, not more 0,002 not normalized
8. Color number of melted product, Hazen units, not more than:
While producing 15 50
During the warranty period of the powder and flakes 20 80
During the warranty period of the melt not normalized not normalized
9. Color number of melted product after heating at 250ºC during 90 minutes, Hazen units, not more than:
While producing 40 200
During the warranty period of the powder and flakes 60 not normalized
During the warranty period of the melt not normalized not normalized