| Identification | Back Directory | [Name]
ORANGE I | [CAS]
523-44-4 | [Synonyms]
oranzi
oranges
ORANGE1
CI 4600
c.i.150
OrangeⅠ
CI 14600
ORANGE I
orangeim
DAIDAI402
Orange 38
fdcorangei
1333orange
acidorangei
aforangeno1
javaorangei
tropaeolin1
CI NO 14600
aizenorangei
d&corangeno1
dyeorangeno1
dyeorangeno.1
schultzno.185
oranzkysela20
Acid Orange Ⅱ
FD&CORANGENO1
ACID ORANGE 20
METANIL ORANGE
egacidorangegg
eniacidorangei
a.f.orangeno.1
acidphosphinecl
fdandcorangeno1
elgacidorange2g
NAPHTHOL ORANGE
hispacidorange1
neklacidorange1
2 ACID ORANGE-I
EXT.D&CORANGENO3
Ext.D&C Orange 3
tertracidorangei
TROPAEOLIN OOO-1
c.i.acidorange20
certiqualorangei
fdandcorangeno.1
extdandcorangeno3
orange1sodiumsalt
nankaiacidorangei
61 ACID ORANGE 61
naphthaleneorangei
orangei,sodiumsalt
extdandcorangeno.3
aizenfoodorangeno1
acidleatherorangei
aizenfoodorangeno.1
TROPAEOLIN OOO NO 1
TROPAEOLIN 000 NO 1
116 ACID ORANGE 116
aizennaphtholorangei
ALPHA-NAPHTHOL ORANGE
externaldandcorangeno3
extractdandcorangeno.3
LABOTEST-BB LT00847535
orangeiextraconcaexport
externaldandcorangeno.3
orangeiextraconc.aexport
ORANGE I, FOR MICROSCOPY
extractdandcorangenumber3
Acid orange 20 (C.I. 14600)
c.i.acidorange20,monosodiumsalt
sodiumazo-alpha-naphtholsulfanilate
sodiumazo-alpha-naphtholsulphanilate
Acid Orange 20
Orange I
Tropaeolin OOO-1
4-p-sulfophenylazo-1-naphtholmonosodiumsalt
4-(p-Sulfophenylazo)-1-naphthol, sodium salt
4-p-sulphophenylazo-1-naphthol,monosodiumsalt
Sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate
sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulphonate
p-((4-hydroxy-1-naphthyl)azo-benzenesulfonicacisodiumsalt
p-((4-hydroxy-1-naphthyl)azo)-benzenesulfonicacisodiumsalt
p-((4-hydroxy-1-naphthyl)azo)benzenesulfonicacid,sodiumsalt
4-(4-HYDROXY-1-NAPHTHYLAZO)BENZENESULFONIC ACID SODIUM SALT
p-((4-hydroxy-1-naphthyl)azo)benzenesulphonicacid,sodiumsalt
SodiuM 4-((4-hydroxynaphthalen-1-yl)diazenyl)benzenesulfonate
p-((4-hydroxy-1-naphthyl)azo)benzenesulfonicacid,monosodiumsalt
p-((4-hydroxy-1-naphthyl)azo)benzenesulphonicacid,monosodiumsalt
4-((4-hydroxy-1-naphthalenyl)azo)-benzenesulfonicacimonosodiumsalt
4-[(4-hydroxy-1-naphthalenyl)azo]-benzenesulfonicacimonosodiumsalt
4-((4-hydroxy-1-naphthalenyl)azo)benzenesulfonicacid,monosodiumsalt
4-((4-hydroxy-1-naphthalenyl)azo)benzenesulphonicacid,monosodiumsalt
Benzenesulfonicacid,4-[(4-hydroxy-1-naphthalenyl)azo]-,monosodiumsalt
α-Naphthol orange, 4-(4-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt, Orange I | [EINECS(EC#)]
208-346-6 | [Molecular Formula]
C16H11N2NaO4S | [MDL Number]
MFCD00021510 | [MOL File]
523-44-4.mol | [Molecular Weight]
350.32 |
| Hazard Information | Back Directory | [Chemical Properties]
Crystalline | [Definition]
ChEBI: CI Acid Orange 20 is an organic molecular entity. | [Preparation]
4-Aminobenzenesulfonic acid diazo, and Naphthalen-1-ol?coupling. | [Properties and Applications]
orange. Soluble in water for palm light orange, slightly soluble in ethanol, acetone, insoluble in most organic solvents. The strong sulfuric acid for purple, diluted into palm orange, red with purple precipitation. Its water solution to join strong hydrochloric acid for orange brown; Add sodium hydroxide in red. Used for wool, silk fiber dyeing, etc. Also used in leather dyeing and indicator. | [Purification Methods]
Purify the dye by dissolving it in the minimum volume of H2O, adding, with stirring, a large excess of EtOH. The salt separates as orange needles. It is collected by centrifugation or filtration, washed with absolute EtOH (3x) and Et2O (2x) in the same way and dried in a vacuum desiccator over KOH. The free acid can be recrystallised from EtOH. [Slotta & Franke Chem Ber 64 86 1931, Beilstein 16 H 275, 16 II 117, 16 IV 410.] The purity can be checked by titration with titanium chloride [Klotz J Am Chem Soc 68 2299 1946]. |
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