Basic information
- CAS
1936-15-8- Standard SMILES
O=S(=O)([O-])c1cc(S(=O)(=O)[O-])c2c(N=Nc3ccccc3)c(O)ccc2c1.[Na+].[Na+]- InChIKey
HSXUHWZMNJHFRV-UHFFFAOYSA-L- Molecular formula
- C16H10N2Na2O7S2
- Average molar mass
- 452.4 g/mol
- Monoisotopic mass
- 451.97248157
Overview
C.i. acid orange 10 appears as orange microcrystals or powder. (NTP, 1992)
Names & identifiers
- Preferred name
- C.I. Acid Orange 10
- IUPAC
- disodium;7-hydroxy-8-phenyldiazenylnaphthalene-1,3-disulfonate
- English name
- Acid Orange 10
- Molecular formula
- C16H10N2Na2O7S2
- Molecular weight
- 452.36
Names & synonyms
C.I. Acid Orange 10DTXSID6021082DTXCID801474349RefChem:1080548Orange G1936-15-8Acid orange 10C.I. Orange GORANGEGLight Orange GOrange G dyeC.I. Food Orange 4
Show more names
CI 16230OG-6ci27GOrangc.i.27oranzgoranzggorange2gorangegg
C.I. 16230Acid Orange GC.I. Acid Orange No. 10C.I. Acid Orange 10, disodium saltColacid Orange GDolkwal Orange GHexacol Orange GOrange GG
Database identifiers
- CAS
1936-15-8- PubChem CID
- 16015
- DTXSID
DTXSID6021082- ChEMBL
CHEMBL410263- ChEBI
CHEBI:82427- UNII
- 1Q6EJU80RN
- EC Number
- 217-705-6
Properties
Computed structural properties
- Topological polar surface area
- 176 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 9
- Rotatable bonds
- 2
- Heavy atoms
- 29
- Formal charge
- 0
- Complexity
- 724
Experimental & physicochemical properties
CosmeticsCosmetic colorant
Solubility50 to 100 mg/mL at 74.3 °F (NTP, 1992)
Melting Point572 to 707 °F (decomposes) (NTP, 1992)
Physical DescriptionC.i. acid orange 10 appears as orange microcrystals or powder. (NTP, 1992)
Physicochemical properties
- Melting point
- 141 °C · 141 °C
- Density
- 0.8 g/mL · 0.80 g/mL at 20 °C
- bulk density
- 430 kg/m3 · 430kg/m3
- Flash point
- 14 °C · 14 °C
- storage temp.
- room temp
- solubility
- 2 O: · H2O: soluble1mg/mL
- form
- Powder
- pka
- 12.8 · 12.8(at 25℃)
- Colour Index
- 16230 · 16230
- color
- Red to Orange
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 99.9% (2117 of 2120) of all reports.
Not Classified
Aggregated GHS information provided per 2120 reports by companies from 5 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(phenylazo)-, disodium salt
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(phenylazo)-, disodium salt: Does not have an individual approval but may be used under an appropriate group standard
Fire HazardsFlash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)
Health HazardsACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits toxic fumes of carbon oxides, nitrogen oxides, sulfur oxides and disodium oxide. (NTP, 1992)
Reactive GroupAzo, Diazo, Azido, Hydrazine, and Azide Compounds
Reactivity AlertsExplosive
Reactivity Profile
C.I. 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. This compound becomes redder and more dull when mixed with copper. It is almost destroyed when mixed with iron. (NTP, 1992)
Chemistry & industry
Uses & manufacturing
Use Classification
Food Additives -> COLOUR -> JECFA Functional Classes
Food Additives -> COLOUR -> JECFA Functional Classes
Cosmetics -> Cosmetic colorant
Applications
UsesOrange G is an azo dye used primarily as a histological stain. Dyes and metabolites.
UsesCollagen 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.
General DescriptionOrange microcrystals or powder.
Preparation methods
Preparationaniline diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling.
Upstream & downstream products
Upstream raw materials
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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