ORANGE I
Synonym(s):α-Naphthol orange;4-(4-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt;Orange I
- CAS NO.:523-44-4
- Empirical Formula: C16H11N2NaO4S
- Molecular Weight: 350.32
- MDL number: MFCD00021510
- EINECS: 208-346-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-07 21:39:59
What is ORANGE I?
Chemical properties
Crystalline
The Uses of ORANGE I
A labeled form of alpha-Naphthol Orange, also known as Acid Orange 20, which is an organic azo dye.
Preparation
4-Aminobenzenesulfonic acid diazo, and Naphthalen-1-ol?coupling.
Definition
ChEBI: CI Acid Orange 20 is an organic molecular entity.
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].
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.
Properties of ORANGE I
Melting point: | 260 °C (decomp) |
storage temp. | Inert atmosphere,Room Temperature |
solubility | DMSO (Slightly), Methanol (Slightly) |
form | Solid |
Colour Index | 14600 |
color | Red to Very Dark Red |
Merck | 14,6857 |
BRN | 3826844 |
IARC | 3 (Vol. 8, Sup 7) 1987 |
EPA Substance Registry System | C.I. Acid Orange 20 monosodium salt (523-44-4) |
Safety information for ORANGE I
Computed Descriptors for ORANGE I
Abamectin manufacturer
Jaffs Dyechem Private Limited
New Products
4-Aminotetrahydropyran-4-carbonitrile Hydrochloride (R)-3-Aminobutanenitrile Hydrochloride 4-AMINO-TETRAHYDRO-PYRAN-4-CARBOXYLIC ACID HCL 4-(Dimethylamino)tetrahydro-2H-pyran-4-carbonitrile 3-((Dimethylamino)methyl)-5-methylhexan-2-one oxalate 1,4-Dioxa-8-azaspiro[4.5]decane 5-Bromo-2-nitropyridine Nimesulide BP Aceclofenac IP/BP/EP Diclofenac Sodium IP/BP/EP/USP Mefenamic Acid IP/BP/EP/USP Ornidazole IP Diclofenac Potassium SODIUM AAS SOLUTION ZINC AAS SOLUTION BUFFER SOLUTION PH 10.0(BORATE) GOOCH CRUCIBLE SINTERED AQUANIL 5 BERYLLIUM AAS SOLUTION 2-Bromo-1-(bromomethyl)-3-chloro-5-nitrobenzene 2-Bromo-3-nitroaniline N-(3-Hydroxypropyl)-N-methylacetamide 3-Bromo-6-chloropyridazine 4-ethyl-3-nitrobenzoic acidRelated products of tetrahydrofuran
You may like
-
Acid orange 20 523-44-4 98%View Details
523-44-4 -
Naphthol orange CAS 523-44-4View Details
523-44-4 -
α-Naphthol Orange CAS 523-44-4View Details
523-44-4 -
Tropaeolin Ooo CAS 523-44-4View Details
523-44-4 -
1823368-42-8 98%View Details
1823368-42-8 -
2-(3-(tert-butyl)phenoxy)-2-methylpropanoic acid 1307449-08-6 98%View Details
1307449-08-6 -
Ethyl 3-(furan-2-yl)-3-hydroxypropanoate 25408-95-1 98%View Details
25408-95-1 -
Lithium ClavulanateView Details
61177-44-4