【 WhatsApp】
+86-21-6420 0566
8618501763615
| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| 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 |
| 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 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 |
| Chemical Properties | Crystalline |
| 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. |
| 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. |
| 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]. |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
Ready to Start?
For help with solutions customized to your business needs, contact Export Director now.
With 30+ years of experience and We firmly believe that product quality is the basis of cooperation.
Chat Now
Phone
8618501763615
Working hours
Monday to Friday
TEl
+86-21-6420 0566
