| No. |
Characteristic |
Requirement |
| |
Class |
Fluoran |
| |
Total color |
90% min. |
| 1) |
Chemical Name |
Tetrabromofluroscein |
| 2) |
Sum of volatile matter (at 135C) and halides and sulfates (calculated
as sodium salts) |
<10% |
| 3) |
Insoluble matter (alkaline solution) |
<0.5% |
| 4) |
a) Phthalic acid |
<1% |
| b) 2-(3, 5-Dibromo-2, 4-Dibromo-2, 4-dihydroxybenzoyl)
benzoic acid |
<0.5% |
| c) 2',4',5',7' - Tetrabromofluorescein, ethyl ester |
<1% |
| d) Brominated resorcinol |
<0.4% |
| e) Fluorescein |
<0.22% |
| f) Sum of mono - and dibromofluoresceins |
<0.2% |
| g) Tribromofluorescein |
<11% |
| h) 2',4'5',7' - Tetrabromofluorescein |
>87% |
| 5) |
Lead (as Pb) |
20 ppm |
| 6) |
Arsenic (as As) |
3 ppm |
| 7) |
Mercury (as Hg) |
1 ppm |
| 8) |
Chemical Formula |
C20H8O5Br4 |
| 9) |
Uses |
Lacquers and plastic |
| 10) |
Hue |
Bluish Red (In Acetone) |
