Customization: | Available |
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CAS No.: | 523-44-4 |
Formula: | C16h11n2nao4s |
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Hunan Yunbang Pharmaceutical Co., Ltd. (Yunbangpharm) located in Changsha High-tech Industrial Park, Hunan. It is a high-tech enterprise specializing in the research and development, production and sales of Pharmaceutical raw materials, Pharmaceutical intermediates(API) and Fine chemicals. Based in China, Yunbangpharm has been providing suitable solutions for many domestic,foreign pharmaceutical companies and traders. Excellent quality, good reputation and authentic price have won the praise of the majority of customers.
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Product Name: | ORANGE I |
Synonyms: | 1333orange;4-((4-hydroxy-1-naphthalenyl)azo)benzenesulfonicacid,monosodiumsalt;4-((4-hydroxy-1-naphthalenyl)azo)-benzenesulfonicacimonosodiumsalt;4-((4-hydroxy-1-naphthalenyl)azo)benzenesulphonicacid,monosodiumsalt;4-[(4-hydroxy-1-naphthalenyl)azo]-benzenesulfonicacimonosodiumsalt;4-p-sulfophenylazo-1-naphtholmonosodiumsalt;4-p-sulphophenylazo-1-naphthol,monosodiumsalt;a.f.orangeno.1 |
CAS: | 523-44-4 |
MF: | C16H11N2NaO4S |
MW: | 350.32 |
EINECS: | 208-346-6 |
Product Categories: | Organics |
Mol File: | 523-44-4.mol |
ORANGE I Chemical Properties |
Melting point | 260 °C (decomp) |
storage temp. | Inert atmosphere,Room Temperature |
solubility | DMSO (Slightly), Meth-anol (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 |
Safety Statements | 22-24/25 |
WGK Germany | 3 |
RTECS | DB7085000 |
HS Code | 32041200 |
Hazardous Substances Data | 523-44-4(Hazardous Substances Data) |
Toxicity | LD50 intraperitoneal in rat: 1gm/kg |
MSDS Information |
ORANGE I Usage And Synthesis |
Chemical Properties | Crystalline |
Uses | A labeled form of alpha-Naphthol Orange, also known as Acid Orange 20, which is an organic azo dye. |
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, aceto-ne, 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 hydro-chloric acid for orange brown; Add sodiu-m 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]. |