Names | |
---|---|
IUPAC name
Sodium 4-(2-hydroxy-1-naphthalenylazo)-naphthalenesulfonate
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Other names
Fast Red A
2-Naphthol Red | |
Identifiers | |
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3D model (
JSmol)
|
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ChemSpider | |
ECHA InfoCard | 100.015.238 |
EC Number |
|
MeSH | Fast+red+S |
PubChem
CID
|
|
RTECS number |
|
UNII |
|
CompTox Dashboard (
EPA)
|
|
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Properties | |
C20H13N2NaO4S | |
Molar mass | 400.38 g·mol−1 |
Appearance | Vivid, dark red, opaque, vitreous solid |
Melting point | 280 °C (536 °F; 553 K) |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Acid red 88 is an azo dye. Due to its intense colour, solid samples appear almost black. It is used to dye cotton textiles red. [1] A closely related acid dye is Acid Red 13.
It can be obtained by azo coupling of naphthionic acid and 2-naphthol. Instead of crystallising, it vitrifies when cooled or salted out of the solution.
This compound is used in the textile industry as a dye. [2] It can also be used for research in photocatalysis (as degradation object). [3]
Names | |
---|---|
IUPAC name
Sodium 4-(2-hydroxy-1-naphthalenylazo)-naphthalenesulfonate
| |
Other names
Fast Red A
2-Naphthol Red | |
Identifiers | |
| |
3D model (
JSmol)
|
|
ChemSpider | |
ECHA InfoCard | 100.015.238 |
EC Number |
|
MeSH | Fast+red+S |
PubChem
CID
|
|
RTECS number |
|
UNII |
|
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C20H13N2NaO4S | |
Molar mass | 400.38 g·mol−1 |
Appearance | Vivid, dark red, opaque, vitreous solid |
Melting point | 280 °C (536 °F; 553 K) |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Acid red 88 is an azo dye. Due to its intense colour, solid samples appear almost black. It is used to dye cotton textiles red. [1] A closely related acid dye is Acid Red 13.
It can be obtained by azo coupling of naphthionic acid and 2-naphthol. Instead of crystallising, it vitrifies when cooled or salted out of the solution.
This compound is used in the textile industry as a dye. [2] It can also be used for research in photocatalysis (as degradation object). [3]