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EC / List no.: 208-924-8
CAS no.: 547-57-9
Mol. formula: C12H10N2O5S.Na
Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive.
In Europe, it was banned as a food additive in 1977.
In the US, it was banned in 1988.
Chrysoine resorcinol can be used as a pH indicator with a color change between pH 11 and pH 12.7. In colorimetry, it has an absorption maximum of 387 nm.
Chrysoine resorcinol can be synthesised via the azo coupling of sulfanilic acid and resorcinol.
Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive.
In Europe, it was banned as a food additive in 1977.
In the US, it was banned in 1988.
Chrysoine resorcinol can be used as a pH indicator with a color change between pH 11 and pH 12.7.
In colorimetry, it has an absorption maximum of 387 nm.
Chrysoine resorcinol can be synthesised via the azo coupling of sulfanilic acid and resorcinol.
Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive.
In the US, it was banned in 1988.
Chrysoine resorcinol can be used as a pH indicator with a color change between pH 11 and pH 12.7.
Chemical Properties
Rust to dark brown powder
Uses:
As indicator. pH: yellow 11, orange-brown 12.7. Occasionally used as plasma stain.
Sodium (E)-4-(2, 4-Dihydroxyphenyl)diazenyl)benzenesulfonate is a food and an azo dye. Dyes and metabolites, Environmental Testing
Preparation
4-Aminobenzenesulfonic acid diazo, Coupled with resorcinol.
Properties and Applications
Soluble in water for golden brown, soluble in ethanol lemon yellow, soluble in acetone and soluble fiber element, insoluble in other organic solvents.
The strong sulfuric acid for yellow, diluted for lemon yellow; In nitric acid solution for yellow.
Its water solution to join strong hydrochloric acid for golden brown; Add thick sodium hydroxide solution for palm orange.
Used for wool, silk, cotton, vinegar, polyamide fiber and fiber dyeing. Also used in leather, biological dyeing, also used in indicator (pH 12 ~ 14).
Chemical Properties
Appearance: Orange-yellow solid
CAS Number: 547-57-9
EINECS Number: 208-924-8
IUPAC Name: Sodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate
InChI: 1S/C12H10N2O5S.Na/c15-9-3-6-11(12(16)7-9)14-13-8-1-4-10(5-2-8)20(17,18)19;/h1-7,13,16H,(H,17,18,19);/q;+1/p-1/b14-11-;
InChIKey: RBENMCXVZFIKFK-IRIIKGHASA-M
Molar Mass: 316.27 g/mol
Molecular Formula: C12H9N2NaO5S
NFPA 704: H-2,F-1,R-0,C-NA
RTECS Number: DB5035000
Solubility: Partially soluble
IUPAC NAMES:
NA
sodium 4-(2,4-dihydroxyphenylazo)benzenesulphonate
sodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate
sodium 4-[(E)-2-(2,4-dihydroxyphenyl)diazen-1-yl]benzene-1-sulfonate
SYNONYMS:
Tropaeoline
Chrysoine
Resorcin yellow
Chrysoine Extra
Tropaeoline O
Chrysonine S
Tropaeolin R
Chrysoine N
Chrysoine S
Chrysonis S
Gold Yellow
Resorcine Yellow
Tropaelin-O
Tropeolin O
Chrysoin G
Resorcinol yellow
Yellow T
Curol Orange G
Dermina Yellow G
Orange Acid G
Neklacid Yellow G
Eniacid Yellow RS
Hispacid Yellow CG
Resorcinol Yellow A
Eurocert Chrysoine S
Tertracid Yellow TRO
Acid Phosphine G New
Naphthazine Yellow RP
Chrysoine Extra Pure A
Chrysoine S Extra Pure
C.I. Acid Orange 6
C.I. Food Yellow 8
Acid Leather Yellow PGW
Resorcine Yellow O Extra
Cetil Chromine Yellow GR
Chrysoin S Specially Pure
ACME Yellow Acid Yellow RS
Sodium azoresorcinolsulfanilate
Tropaeolene (Biological Stain)
Chrysoin S
Tropaolin 0
C.I. 14270
NSC10441
p-(2, sodium salt
NSC-10441
C.I. Acid Orange 6, monosodium salt
A830356
Benzenesulfonic acid,4-dihydroxyphenyl)azo]-, sodium salt
Benzenesulfonic acid,4-dihydroxyphenyl)azo]-, monosodium salt
sodium 4-[2-(2-hydroxy-4-oxo-1-cyclohexa-2,5-dienylidene)hydrazinyl]benzenesulfonic acid
sodium 4-[2-(2-oxidanyl-4-oxidanylidene-cyclohexa-2,5-dien-1-ylidene)hydrazinyl]benzenesulfonic acid
4-((2,4-dihydroxyphenyl)azo)-benzenesulfonicacimonosodiumsalt
4-[(2,4-dihydroxyphenyl)azo]-benzenesulfonicacimonosodiumsalt
TROPAEOLIN O C.I. NO. 14270
TROPAEOLIN OO C.I. NO. 13080
FAST YELLOW C.I. NO. 13080
AcidOrange6(C.I.14270)
TROPAEOLIN O FOR C.I. No 14270
TROPAEOLIN 0
Tropaeolin O, pure
tropaeolin o sodium salt
FOODYELLOW8
ACIDORANGE6,SODIUMSALT
TROPAEOLINEO
CIACIDORANGE6,SODIUMSALT
4-[(2,4-dihydroxyphenyl)azo]-benzenesulfonic acid monosodium salt
Acid Orange 6, Chrysoin, Resorcinol yellow
2-Aminoazobenzene-4,4'-disulfonic acid disodium salt
4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt, Acid Orange 6, Chrysoin, Resorcinol yellow
Acid Orange 6 NaCl (technical product)
Tropaeolin O, pure 25GR
Acid Orange 6 2,4-Dihydroxyazobenzene-4'-sulfonic Acid Sodium Salt Resorcinol Yellow Sodium 2,4-Dihydroxyazobenzene-4'-sulfonate
sodiuM (E)-4-((2,4-dihydroxyphenyl)diazenyl)benzenesulfonate
Benzenesulfonic acid,4-[2-(2,4-dihydroxyphenyl)diazenyl]-, sodium salt (1:1)
Benzene-sulfonic Acid, P-(2,4-dihydroxyphenylazo)-, Sodium Salt
2,4-dihydroxyazobenzene-4′-sulfonatesodium Salt
Acid Orange 6 NaCl
acidleatheryellowpgw
acidphosphinegnew
acmeyellowacidyellowrs
Benzenesulfonicacid,4-[(2,4-dihydroxyphenyl)azo]-,monosodiumsalt
c.i.acidorange6
c.i.acidorange6,monosodiumsalt
c.i.foodyellow8
cetilchromineyellowgr
chrysoineextra
chrysoineextrapurea
chrysoinen
chrysoines
chrysoinesextrapure
chrysoing
chrysoins
chrysoinsspeciallypure
chrysonines
curolorangeg
cyellow12
derminayellowg
e103(dye)
eniacidyellowrs
eurocertchrysoines
goldyellow
hispacidyellowcg
monosodium4-((2,4-dihydroxyphenyl)azo)benzenesulfonate
naphthazineyellowrp
neklacidyellowg
orangeacidg
resorcineyellowoextra
resorcinolyellowa
sodiumazoresorcinolsulfanilate
