PRODUCT DETAIL
C.I.GENERIC NAME : ACID RED 87
PRODUCT NAME : EOSIN YELLOW
CAS NO . : 17372-87-1
C.I.NO. : 45380
MOLECULAR FORMULA : C20H6Br4Na2O5
MOLECULAR WEIGHT : 691.88gm/mol.
ABSORPTION MAXIMA : 515-518nm
( Distill water + 1ml NH3 pH = 7 )λ m a x
ABSORPTIVITY : 1230-1400
( A 1%, 1cm in Distill
Water + 1ml NH3 pH =7 at λ max. )
Acid Red 87 ( Water base ) ( Normal grade - Ink / Cosmetic )
| Test | Specification | Result |
| APPEARANCE | REDDISH BROWN POWDER | PASSES |
| SOLUBILITY (1% Aqueous Soln. ) | DARK RED AND CLEAR | PASSES |
| pH (2% Aqueous Soln.) | 7-9 | 7.19 |
| WAVELENGTH גּ MAX. | 515-518nm | 516.7 |
| ABSORPTIVITY (A1%,1CM IN WATER AT גּ MAX. |
1260-1400 | 1267.5 |
| DYE CONTENT (on Dry Basis ) | 90% MIN | 90.70% |
| LOSS ON DRYING | 5% MAX | 3.91% |
Acid Red 87 ( D& C grade quality )
| Descritpion | Specification | Result |
| Physical Appearance | Reddish Brown powder | Pass |
| Solubility | Red & Clear Solution | Pass |
| Dye Content ( on Dry Basis ) | ≥95% | 95.5% |
| pH ( 1% Aqueous Solution ) | 7-8 | 7.3 |
| Water Insoluble | 0.20% | Nil |
| Loss on Drying | 5% Max. | 3.60% |
| Chlorides & Sulphate | 5% Max. | Pass |
| HEAVY METALS | ||
| Lead | 20ppm | Pass |
| Arsenic | 3ppm | Not detected |
| Mercury | 1ppm | Not detected |
