| [IN-01] ALIZARIN RED S CAS-No. 130-22-3 |
| Chemical Formula |
C14H7NaO7S·H2O |
| Molecular Weight |
360.27 |
| 1 st Transition Range |
pH4.0– pH6.0 lightly yellow to orange |
| 2 nd Transition Range |
pH6.0– pH12 orange to red violet |
| Sulfated ash |
≤ 25% |
| Solution Clarity (water) |
Pass |
| Sensitivity to acid and alkali |
Pass |
| Sensitivity to aluminium |
Pass |
| [IN-02] ALIZARIN YELLOW GG CAS-No. 584-42-9 |
| Chemical Formula |
C13H8N3NaO5 |
| Molecular Weight |
309.21 |
| Transition Range |
pH10.0– pH12.0 light yellow to brown yellow |
| Solution Clarity (Ethanol) |
Pass |
| Sulfated ash |
≤ 30% |
| [IN-03] ALIZARIN YELLOW R SODIUM SALT CAS-No. 1718-34-9 |
| Chemical Formula |
C13H8N3NaO5 |
| Molecular Weight |
309.22 |
| Content |
≥ 90.0% |
| Transition Range |
pH10.0–pH12.0 yellow to red |
| Solution clarity (water) |
Pass |
| Sulfated ash |
≤ 20–25% |
| [ IN-04 ] BROMOCRESOL GREEN CAS-No. 76-60-8 |
| Chemical Formula |
C21H14 Br4O5S |
| Molecular Weight |
698.04 |
| Transition Range |
pH3.8–pH5.4 yellowish green to blue |
Maximum absorbtion wave length,nm.
λ1 (pH3.8)
λ2 (pH5.4) |
440–445
615–618 |
Absorption rate of quality, L/cm.g
α1( λ1, pH 3.8 dry basis )
α2( λ2, pH 5.4 dry basis ) |
24–28
53–58 |
| Sulfated ash |
≤ 0.25% |
| Solution Clarity (Ethanol) |
Pass |
| Loss on drying |
≤ 3% |
| [ IN-05 ] BROMO CRESOL PURPLE CAS-No. 115-40-2 |
| Chemical Formula |
C21H16Br2O5S |
| Molecular Weight |
540.24 |
| Appearance |
Pass |
| Transition Range |
PH5.2–pH6.8 greenish yellow to blue violet |
| Dilution alkali solution |
Pass |
| Sulfated ash |
≤ 0.1% |
| Loss on drying |
≤ 0.5% |
