Acid Orange 10
- CAS No.
- 1936-15-8
- Chemical Name:
- Acid Orange 10
- Synonyms
- ORANGE G;CI 16230;OG-6;ci27;GOrang;c.i.27;oranzg;oranzgg;orange2g;orangegg
- CBNumber:
- CB5777321
- Molecular Formula:
- C16H10N2Na2O7S2
- Molecular Weight:
- 452.36
- MDL Number:
- MFCD00012457
- MOL File:
- 1936-15-8.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 141 °C |
|---|---|
| Density | 0.80 g/mL at 20 °C |
| bulk density | 430kg/m3 |
| Flash point | 14 °C |
| storage temp. | room temp |
| solubility | H2O: soluble1mg/mL |
| form | Powder |
| pka | 12.8(at 25℃) |
| Colour Index | 16230 |
| color | Red to Orange |
| PH | 9 (10g/l, H2O, 20℃) |
| PH Range | Yellow (11.5) to pink (14.0) |
| Water Solubility | 5 g/100 mL (20 ºC) |
| λmax | 475 nm |
| ε(extinction coefficient) |
≥10000 at 329-331nm in H2O ≥17000 at 473-479nm in H2O ≥20500 at 246-250nm in H2O |
| BRN | 4120705 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Major Application |
diagnostic assay manufacturing hematology histology |
| Biological Applications | Detecting lung cancer metastasis; measuring glycated proteins; ophthalmic devices |
| Cosmetics Ingredients Functions | COLORANT |
| InChI | 1S/C16H12N2O7S2.2Na/c19-13-7-6-10-8-12(26(20,21)22)9-14(27(23,24)25)15(10)16(13)18-17-11-4-2-1-3-5-11;;/h1-9,17H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2/b18-16+;; |
| InChIKey | HSXUHWZMNJHFRV-QIKYXUGXSA-L |
| Toxicology and Carcinogenesis | Carcinogenesis Studies of C.I. Acid Orange 10 (CASRN 1936-15-8) in F344 Rats and B6C3F1 Mice (Feed Studies) |
| CAS DataBase Reference | 1936-15-8(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 1Q6EJU80RN |
| IARC | 3 (Vol. 8, Sup 7) 1987 |
| EPA Substance Registry System | C.I. Acid Orange 10, disodium salt (1936-15-8) |
| UNSPSC Code | 41116130 |
| NACRES | NA.52 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) | ![]() GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H315-H319 |
| Precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
| Hazard Codes | Xi,F |
| Risk Statements | 36/37/38-11 |
| Safety Statements | 22-24/25-37/39-26-16-7-36/37 |
| RIDADR | UN 1987 3/PG 2 |
| WGK Germany | 3 |
| RTECS | QJ6500000 |
| TSCA | TSCA listed |
| HS Code | 32041200 |
| Storage Class | 11 - Combustible Solids |
| Hazardous Substances Data | 1936-15-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 3000 mg/kg |
Acid Orange 10 price More Price(57)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 861286 | Orange G certified by the Biological Stain Commission, Dye content 80% | 1936-15-8 | 25g | $101 | 2026-04-30 | Buy |
| Sigma-Aldrich | 861286 | Orange G certified by the Biological Stain Commission, Dye content 80% | 1936-15-8 | 100g | $309 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.15925 | Orange G (C.I. 16230) for microscopy Certistain? | 1936-15-8 | 25g | $84.8 | 2023-01-07 | Buy |
| TCI Chemical | O0093 | Orange G | 1936-15-8 | 25g | $34 | 2026-04-30 | Buy |
| Usbiological | 286245 | Orange g, Technical grade Dye content Asreported | 1936-15-8 | 25g | $319 | 2026-06-03 | Buy |
Acid Orange 10 Chemical Properties, Uses, Production
Chemical Properties
orange crystals or powder
Uses
Orange G is an azo dye used primarily as a histological stain. Dyes and metabolites.
Uses
Collagen stain for connective tissue. Used with Orcein, Alizarin Blue 2B, and Fast Green FCF in Kornhauser′s quadruple stain for most elementary structures of tissues.
Definition
ChEBI: An organic sodium salt that is the disodium salt of 7-hydroxy-8-[(E)-phenyldiazenyl]naphthalene-1,3-disulfonic acid. It is often combined with other yellow dyes in alcoholic solution to stain erythrocytes in trichrome methods, and is used or demonstrating cells in the pancreas and pituitary.
Preparation
aniline diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling.
General Description
Orange microcrystals or powder.
Air & Water Reactions
Azo dyes can be explosive when suspended in air at specific concentrations. This organic acid has a moderate soluble in water. The resulting solutions contain concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid.
Reactivity Profile
Acid Orange 10 is an azo compound. Toxic gases are formed by mixing compounds containing azo groups with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. Acid Orange 10 becomes redder and more dull when mixed with copper. Acid Orange 10 is almost destroyed when mixed with iron.
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition Acid Orange 10 emits toxic fumes of carbon oxides, nitrogen oxides, sulfur oxides and disodium oxide.
Fire Hazard
Flash point data for Acid Orange 10 are not available; however, Acid Orange 10 is probably combustible.
Biochem/physiol Actions
Orange G is used in collagen stain for connective tissue. It is used with Orcein, Alizarin Blue 2B, and Fast Green FCF in Kornhauser′s quadruple stain for most elementary structures of tissues. It is also used along with acid fuchsin and light green in masson trichrome stain for the staining of cellular structures, red blood cells and muscle cells.
Properties and Applications
bright orange. Soluble in water for orange, slightly soluble in ethanol (golden orange) and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for yellow orange, diluted for yellow; In nitric acid solution for wine red, to orange. Its water solution and strong hydrochloric acid for yellow orange; Add nitric acid for wine red, to orange; Add thick sodium hydroxide solution for orange brown. Used for silk and wool products dyeing, also can dye paper and manufacturing ink, used in wood and color pencil manufacturing and biological dyeing.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4-5 | 1 | 5 | 2 | 1 | 5 | 2 | 1 |
| AATCC | 4 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
Purification Methods
Recrystallise this dye from 75% EtOH, dry it for 3hours at 110o and keep it in a vacuum desiccator over H2SO4. The free acid crystallises from EtOH or conc HCl in deep red needles with a green reflex. [Conant & Pratt J Am Chem Soc 48 2483 1923, Drew & Landquist J Chem Soc 292 1938, Beilstein 16 H 301, 16 I 305, 16 II 141, 16 III 327.]
Acid Orange 10 Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Biological Technology Development Co., Ltd. | 021-69955236-807 13918189704 | chinaruji@chinaruji.com | China | 5093 | 55 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
| Sichuan Kulinan Technology Co., Ltd | 400-1166-196 18981987031 | cdhxsj@163.com | China | 11674 | 57 |
| Tianjin heowns Biochemical Technology Co., Ltd. | 400 638 7771 | sales@heowns.com | China | 14412 | 57 |
| Sinopharm Chemical Reagent Co,Ltd. | 86-21-63210123 | sj_scrc@sinopharm.com | China | 9791 | 79 |
View Latest Price from Acid Orange 10 manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
![]() |
2019-07-06 | Acid Orange 10
1936-15-8
|
$1.00 | 1kg | 99% | Career Henan Chemical Co |
-

- Acid Orange 10
1936-15-8
- $1.00
- 99%
- Career Henan Chemical Co





