ORANGE I
- CAS No.
- 523-44-4
- Chemical Name:
- ORANGE I
- Synonyms
- oranzi;CI 4600;ORANGE1;OrangeⅠ;c.i.150;oranges;OrangeⅠ;ORANGE I;CI 14600;orangeim
- CBNumber:
- CB7144028
- Molecular Formula:
- C16H12N2O4S.Na
- Molecular Weight:
- 351.33
- MDL Number:
- MFCD00021510
- MOL File:
- 523-44-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| α-Naphthol Orange | N0308 | 25g | $52 |
| alpha-Naphthol Orange (Technical Grade) | TRC-N369040-500MG | 500mg | $94 |
| alpha-Naphthol Orange (Technical Grade) | TRC-N369040-250MG | 250mg | $74 |
| alpha-Naphthol Orange (Technical Grade) | TRC-N369040-2.5G | 2.5g | $120 |
| a-Naphthol orange | 38605 | 25G | $72.31 |
| More product size | |||
| 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 |
| EWG's Food Scores | 1 |
| FDA UNII | W9Q9OB858O |
| IARC | 3 (Vol. 8, Sup 7) 1987 |
| EPA Substance Registry System | C.I. Acid Orange 20 monosodium salt (523-44-4) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P301+P312-P302+P352-P304+P340-P305+P351+P338 |
| Safety Statements | 22-24/25 |
| WGK Germany | 3 |
| RTECS | DB7085000 |
| TSCA | TSCA listed |
| HS Code | 32041200 |
| Hazardous Substances Data | 523-44-4(Hazardous Substances Data) |
| Toxicity | LD50 intraperitoneal in rat: 1gm/kg |
ORANGE I price More Price(33)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TCI Chemical | N0308 | α-Naphthol Orange | 523-44-4 | 25g | $52 | 2026-04-30 | Buy |
| TRC | TRC-N369040-500MG | alpha-Naphthol Orange (Technical Grade) | 523-44-4 | 500mg | $94 | 2026-06-03 | Buy |
| TRC | TRC-N369040-250MG | alpha-Naphthol Orange (Technical Grade) | 523-44-4 | 250mg | $74 | 2026-06-03 | Buy |
| TRC | TRC-N369040-2.5G | alpha-Naphthol Orange (Technical Grade) | 523-44-4 | 2.5g | $120 | 2026-06-03 | Buy |
| Chem-Impex | 38605 | a-Naphthol orange | 523-44-4 | 25G | $72.31 | 2026-05-19 | Buy |
ORANGE I Chemical Properties,Uses,Production
Chemical Properties
Crystalline
Uses
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-olcoupling.
Definition
ChEBI: CI Acid Orange 20 is an organic molecular entity.
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].
ORANGE I Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hefei Lbao Physical & Chemical Science Co.,Ltd | +15184799099 | lbaochemicals@gmail.com | China | 670 | 58 |
| Shanghai Zheyan Biotech Co., Ltd. | 18017610038 | zheyansh@163.com | CHINA | 3619 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29812 | 58 |
| BOC Sciences | +1-631-485-4226 | inquiry@bocsci.com | United States | 19936 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49979 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +17819995354 | marketing@targetmol.com | United States | 32466 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
| Dideu Industries Group Limited | +86-86-15536356810 +8617392712697 | 1022@dideu.com | China | 29095 | 58 |
| Dayang Chem (Hangzhou) Co.,Ltd. | +86-0571-88938639 +8617705817739 | info@dycnchem.com | China | 52704 | 58 |
| CD Chemical Group Limited | +8615986615575 | info@codchem.com | China | 17259 | 58 |
View Lastest Price from ORANGE I manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-07-16 | Orange I
523-44-4
|
$31.00 | 96.48% | 10g | TargetMol Chemicals Inc. | ||
 |
2026-05-18 | ORANGE I
523-44-4
|
1kg | 98% | Hefei Lbao Physical & Chemical Science Co.,Ltd | |||
 |
2019-07-12 | ORANGE I
523-44-4
|
$1.00 | 1KG | 99% | 25kg | Career Henan Chemical Co |
