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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
Last updated:2026-05-28 02:51:17

Acid Orange 10 Properties

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)  Exclamation Mark (GHS07)
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
Product number Packaging Price Buy
861286 25g $101 Buy
861286 100g $309 Buy
1.15925 25g $84.8 Buy
O0093 25g $34 Buy
286245 25g $319 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.]

Global Suppliers ( 350)
Supplier Tel Email 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
Acid Orange 10 pictures 2019-07-06 Acid Orange 10
1936-15-8
$1.00 1kg 99% Career Henan Chemical Co
1,3-Naphthalenedisulfonicacid,7-hydroxy-8-(phenylazo)-,disodiumsalt 1370orange 1-phenylazo-2-naphthol-6,8-disulphonicacid,disodiumsalt 3-naphthalenedisulfonicacid,7-hydroxy-8-(phenylazo)-disodiumsalt 7-hydroxy-8-(phenylazo)-1,3-naphthalenedisulphonicacid,disodiumsalt disodium 7-hydroxy-8-phenylazonaphthalene-1,3-disulphonate Orange G (CI 16230) ORANGE G SODIUM ORANGE G SOLUTION ORANGE G SODIUM MOLECULAR BIOLOGY GRADE ORANGE G, CERTIFIED (C.I. 16230) ORANGE G, FOR MICROSCOPY OrangeGIndicatorForMicroscopy ORANGE G (C.I. No. 16230 ) ACID ORANGE 10 (C.I. 16230) Orange G, certified, pure Orange G, high purity biological stain, pure FOODORANGE4 1-Phenylazo-2-naphthol-6,8-disulfonic acid disodium salt, Acid Orange10, Wool Orange 2G, 7-Hydroxy-8-phenylazo-1,3-naphthalenedisulfonic acid disodium salt Acid Orange X Acid Leather Orange G Orange G (CI x 16230) Orange G,pure,certified Orange G,pure,high purity biological stain Fast light orange G Acid Orange 10, 7-Hydroxy-8-phenylazo-1,3-naphthalenedisulphonic acid disodium salt Orange G6 Orange G, certified, pure 10GR Orange G, high purity biological stain, pure 25GR Orange G, 85+%, pure, high purity biological stain ORANGE G (C.I. 16230) FOR MICROSCOPY CER GOrang Orange G, dye content 80% Orange 6G ACID ORANGE G ACID ORANGE 10 7-HYDROXY-8-PHENYLAZO-1,3-NAPHTHALENEDISULFONIC ACID 7-HYDROXY-8-(PHENYLAZO)-1,3-NAPHTHALENEDISULFONIC ACID, DISODIUM SALT 7-HYDROXY-8-PHENYLAZO-1,3-NAPHTHALENEDISULFONIC ACID SODIUM SALT 1-PHENYLAZO-2-NAPHTHOL-6,8-DISULFONIC ACID DISODIUM SALT 1-PHENYLAZO-2-NAPTHOL-6,8-DISULFONIC ACID DISODIUM SALT APS TABLETS 150MG INTRACID FAST ORANGE G CALCOCID FAST LIGHT ORANGE 2G CI NO 16230 CRYSTAL ORANGE GG OG-6 ORANGE G SODIUM SALT ORANGE G CERTIFIED WOOD ORANGE 2G WOOL ORANGE 2G XYLENE FAST ORANGE G 2-naphthol-6,8-disulfonic acid, 1-phenylazo-, Disodium Salt Acid Crystal Orange Acid Fast Orange Gg Acid Lightfast Orange Acid Orange 2gl Acid Orange Egg