PRODUCTS
Naphthol AS-PH
Details
Structural Formula:
Name: 2-hydroxy-3-naphthoic acid o-ethoxyanilide
Molecular formula: C19H17O3N
Molecular weight: 307.4
Quality Standards of Naphthol AS-PH
|
Description |
Specification |
|
Appearance |
light yellowish white even powder |
|
Shade and strength when coupling with Naphthol As on cotton fibre |
similar to the standard |
|
Primary melting point of the dried |
≥ 150 ℃ |
|
Insoluble matter in alkali |
≤ 0.5% |
|
Percentage of screenings(80 mesh) |
≤ 5.0% |
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