Direct Red 16
Direct Red 16 Basic information
- Product Name:
- Direct Red 16
- Synonyms:
-
- 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenylazo-, disodium salt
- 7-Amino-4-hydroxy-3-[[5-hydroxy-6-(phenylazo)-7-sulfo-2-naphtyl]azo]-2-naphthalenesulfonic acid disodium salt
- C.I.27680
- C.I.Direct Red 16
- MMFAIRVIRUMWLM-DBHLKOEUSA-L
- 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-(2-(5-hydroxy-6-(2-phenyldiazenyl)-7-sulfo-2-naphthalenyl)diazenyl)-, sodium salt (1:2)
- C.I. Direct red 16, disodium salt
- Disodium 7-amino-4-hydroxy-3-((5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl)azo)naphthalene-2-sulphonate
- CAS:
- 6227-02-7
- MF:
- C26H20N5NaO8S2
- MW:
- 617.58
- EINECS:
- 228-323-4
- Product Categories:
-
- Organics
- Mol File:
- 6227-02-7.mol
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Direct Red 16 Chemical Properties
- Boiling point:
- 1099.06℃[at 101 325 Pa]
- Density
- 1.683[at 20℃]
- vapor pressure
- 0Pa at 25℃
- Water Solubility
- 3.93g/L at 20℃
- LogP
- -1.508 at 20℃
- EPA Substance Registry System
- C.I. Direct Red 16, disodium salt (6227-02-7)
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Direct Red 16 Usage And Synthesis
Preparation
aniline diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupled its product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Flammability and Explosibility
Non flammable
Properties and Applications
red. Soluble in water for product red, slightly soluble in ethanol peach pink, insoluble in other organic solvents. The strong sulfuric acid for blue, red to orange diluted to brown, and a red precipitate.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4 | 3-4 | 2 | 1-2 | 1 | ||
| AATCC | 4 | 3 | 1-2 | 1 | 1 | ||