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.
Phtalic Anhydride
GOST 7119-77
Formula: 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 |