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CAS No.: | 130-23-4 |
---|---|
Name: | 1-Amino-8-naphthol-4,6-disulfonic acid |
Article Data: | 4 |
Molecular Structure: | |
Formula: | C10H9NO7S2 |
Molecular Weight: | 319.316 |
Synonyms: | 1-Naphthol-3,5-disulfonicacid, 8-amino- (6CI);1-Amino-8-hydroxynaphthalene-4,6-disulfonic acid;1-Amino-8-naphthol-4,6-disulfonic acid;4-Amino-5-hydroxy-1,7-naphthalenedisulfonic acid;4-Amino-5-naphthol-1,7-disulfonic acid;8-Amino-1-hydroxy-3,5-naphthalenedisulfonic acid;8-Amino-1-naphthol-3,5-disulfonic acid;K acid;NSC 7110; |
EINECS: | 204-982-3 |
Density: | 1.88 g/cm3 |
Solubility: | 20g/L at 26.4℃ |
Appearance: | light brown powder |
Hazard Symbols: | Xi,T |
Risk Codes: | R41 |
PSA: | 171.75000 |
LogP: | 3.36380 |
8-amino-naphthalene-1,3,5-trisulfonic acid
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
at 170 - 175℃; unter Druck; |
8-amino-naphthalene-1,3,5-trisulfonic acid
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With alkali hydroxide at 150 - 220℃; |
3-nitrocinnamoyl chloride
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
Reduktion und Behandlung des Reaktionsprodukts mit Phosgen bei Gegenwart von Natriumacetat in waessr. Loesung; |
p-nitrobenzenediazonium
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With acid Reduktion des Farbstoffs mit Zinn oder Zinn(II)-chlorid in Salzsaeure; |
Diphenyl-4,4'-bis-diazonium
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
4,4'-diamino-5,5'-dihydroxy-6,6'-biphenyl-4,4'-diyl-bis-azo-bis-naphthalene-1,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate |
Conditions | Yield |
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nachf. Kuppeln mit Benzoldiazoniumchlorid in saurer und alkal. Loesung und Reduktion des entst. Bisazofarbstoffs mit Zinn(II)-chlorid und konz. Salzsaeure; |
Conditions | Yield |
---|---|
With acid und Reduzieren des Reaktionsprodukts mit Natriumsulfid; |
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sulfuric acid; bromine; acetic acid |
4-amino-5-hydroxy-1,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
durch Austausch von NH2 gegen Cl nach dem Sandmeyerschen Verfahren; |
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The 1-Amino-8-naphthol-4,6-disulfonic acid ,its cas register number is 130-23-4.It also can be called as l,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- and the IUPAC name about this chemical is 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid .It belongs to the Intermediates of Dyes and Pigments. Raw materials is 1-Naphthylamine-4,6,8-trisulfonic acid .
Following are the chemical properties about 1-Amino-8-naphthol-4,6-disulfonic acid :(1)#H bond acceptors: 8 ; (2)#H bond donors: 5 ; (3)#Freely Rotating Bonds: 4 ; (4)Polar Surface Area: 115.97 Å2 ; (5)Index of Refraction: 1.764 ; (6)Molar Refractivity: 70.15 cm3 ; (7)Molar Volume: 169.8 cm3 ; (8)Polarizability: 27.81x10-24cm3 ; (9)Surface Tension: 104.7 dyne/cm
The 1-Amino-8-naphthol-4,6-disulfonic acid is a light brown powder, it slightly soluble in cold water and soluble in hot water, also it can soluble in soda ash or caustic soda solution, after react with ferric chloride it will be yellow green.It can be used as azo dyes, reactive dyes and organic pigment intermediates, mainly used for the production of cationic dyes, reactive red K-2G and so on.
Preparition methods: The 1-Amino-8-naphthol-4,6-disulfonic acid can be got from the 1-naphthylamine-4,6,8-3 acid by neutralization, alkali, acidification. The 1-naphthylamine-4,6,8-3 acid solution with sodium carbonate and sodium were naphthylamine 3, then at 178-184 °C under liquid alkali fusion with sodium hydroxide; then use sulfuric acid in the 0.7- 0.78MPa obtained under acid 4h. The finished product is rice brown powder, K acid content of 80%.
This chemical can be described computed from structure:
(1)Canonical SMILES: C1=CC(=C2C=C(C=C(C2=C1N)O)S(=O)(=O)O)S(=O)(=O)O
(2)InChI: InChI=1S/C10H9NO7S2/c11-7-1-2-9(20(16,17)18)6-3-5(19(13,14)15)4-8(12)10(6)7/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18)
(3)InChIKey: ZUQOBHTUMCEQBG-UHFFFAOYSA-N