2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:4) (6226-79-5)

Identification
Name:	2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:4)
Synonyms:	2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodiumsalt (9CI);C.I. Acid Red 112, tetrasodium salt (8CI);Ponceau S (6CI);C.I.Acid Red 112;Ponceau Red S;Ponceau S Extra;
CAS:	6226-79-5
EINECS:	228-319-2
Molecular Formula:	C₂₂H₁₂N₄Na₄O₁₃S₄
Molecular Weight:	760.57
InChI:	InChI=1/C22H16N4O13S4.4Na/c27-22-20(43(37,38)39)10-12-9-16(41(31,32)33)6-7-17(12)21(22)26-25-18-11-14(3-8-19(18)42(34,35)36)24-23-13-1-4-15(5-2-13)40(28,29)30;;;;/h1-11,27H,(H,28,29,30)(H,31,32,33)(H,34,35,36)(H,37,38,39);;;;/q;4*+1/p-4/b24-23+,26-25+;;;;
Molecular Structure:
Properties
Density:	1.01 g/mL at 20 °C
Stability:	Stable. Incompatible with strong oxidizing agents.
Refractive index:	n20/D 1.338
Water Solubility:	10 g/L
Solubility:	10 g/L
Appearance:	Brown powder.
Specification:	Ponceau S (CAS NO.6226-79-5) is also named as 2-Hydroxy-1-((4((4-sulfophenyl)azo)-2-sulfophenyl)azo)naphthalene-3,6-disulfonic acid, tetrasodium salt ; C.I. 27195 ; C.I. Acid Red 112 ; NSC 16216 ; Ponceau Red S ; Ponceau S Extra ; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((2-sulfo-4-((4-sulfophenyl)azo)phenyl)azo)-, tetrasodium salt ; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-(2-(2-sulfo-4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:4) ; C.I. Acid Red 112, tetrasodium salt (8CI) ; Tetrasodium 3-hydroxy-4-(2-sulphonato-4-(4-sulphonatophenylazo)phenylazo)naphthalene-2,7-disulphonate . Ponceau S (CAS NO.6226-79-5) is red powder.
HS Code:	32041200
Storage Temperature:	Store at RT.
Usage:	Biological stain.
Safety Data
Hazard Symbols	Xi:Irritant

2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:4) (6226-79-5)

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