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Name Phenol red sodium salt
EINECS252-057-8
CAS No. 34487-61-1
Density0.972 g/cm³
PSA95.04000
LogP4.62760
SolubilitySoluble in water
Melting Point285 °C (dec.)(lit.)
FormulaC₁₉H₁₃NaO₅S
Boiling Point562.8oC at 760mmHg
Molecular Weight376.365
Flash Point294.2oC
Transport InformationN/A
Appearancered liquid or red/brown crystals
Safety26-36-37/39-45-36/37/39-27
Risk Codes36/37/38-34
Molecular Structure
Hazard SymbolsXi, C
SynonymsXi, C

Phenol red sodium salt Synthetic route

: 34487-61-1
phenolsulphophthaleine sodium salt

: 172464-36-7
2-(4,4'-dihydroxy-benzhydryl)-benzenesulfonic acid

Conditions

Conditions	Yield
With hydrogenchloride; sodium tetrahydroborate In ethanol at 25℃; for 48h;

: 34487-61-1
phenolsulphophthaleine sodium salt

: 115481-73-7
Bis(phenol) phenyl sulfonate

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: 1.) NaBH4, 2.) 5percent HCl / aq. ethanol / 48 h / 25 °C 2: 72 percent / 1.) RT, 4h, 2.) CH2Cl2, 1 h 3: PCl5 / 3 h / 60 - 65 °C / 0.1 Torr 4: 92 percent / Et3N / CH2Cl2 / 12 h / 25 °C 5: 93 percent / HCl conc. / methanol / 20 h / Ambient temperature View Scheme

: 34487-61-1
phenolsulphophthaleine sodium salt

: 115511-92-7
bis(4.acetoxyphenyl)<2-(phenoxysulfonyl)phenyl>methane

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 1.) NaBH4, 2.) 5percent HCl / aq. ethanol / 48 h / 25 °C 2: 72 percent / 1.) RT, 4h, 2.) CH2Cl2, 1 h 3: PCl5 / 3 h / 60 - 65 °C / 0.1 Torr 4: 92 percent / Et3N / CH2Cl2 / 12 h / 25 °C View Scheme

: 34487-61-1
phenolsulphophthaleine sodium salt

: 147510-56-3
Acetic acid 4-[(4-acetoxy-phenyl)-(2-chlorosulfonyl-phenyl)-methyl]-phenyl ester

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 1.) NaBH4, 2.) 5percent HCl / aq. ethanol / 48 h / 25 °C 2: 72 percent / 1.) RT, 4h, 2.) CH2Cl2, 1 h 3: PCl5 / 3 h / 60 - 65 °C / 0.1 Torr View Scheme

: 34487-61-1
phenolsulphophthaleine sodium salt

: 115481-75-9
pyridinium 2-benzenesulfonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 1.) NaBH4, 2.) 5percent HCl / aq. ethanol / 48 h / 25 °C 2: 72 percent / 1.) RT, 4h, 2.) CH2Cl2, 1 h View Scheme

: 65201-92-5
2-[2-[4-(dimethylamino)phenyl]ethenyl]-1-ethylquinolinium chloride

: 34487-61-1
phenolsulphophthaleine sodium salt

: QR+*PR-

Conditions

Conditions	Yield
In water

: 2768-90-3
quinaldine blue

: 34487-61-1
phenolsulphophthaleine sodium salt

: PNC+*PR-

Conditions

Conditions	Yield
In water

: 34487-61-1
phenolsulphophthaleine sodium salt

: 62625-28-9
3',3'',5',5''-tetrabromophenolsulphonephthalein sodium salt

Conditions

Conditions	Yield
With Agrocybe aegerita heme-thiolate peroxygenase; dihydrogen peroxide; sodium bromide at 20℃; pH=5; Reagent/catalyst; Enzymatic reaction;

Phenol red sodium salt Specification

The IUPAC name of Phenol red sodium salt is sodium 4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenolate. With the CAS registry number 34487-61-1, it is also named as Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, sodium salt (1:1). The product's categories are analytical chemistry; indicator (pH); pH indicators. It is dark red crystals or powder which is soluble in water, and slightly soluble in alcohol. In addition, Phenol red sodium salt is stable and incompatible with strong oxidizing agents. And it acts as a pH indicator.

The other characteristics of this product can be summarized as: (1)#H bond acceptors: 5; (2)#H bond donors: 2; (3)#Freely Rotating Bonds: 4; (4)Rotatable Bond Count: 2; (5)Tautomer Count: 2; (6)Exact Mass: 376.038139; (7)MonoIsotopic Mass: 376.038139; (8)Topological Polar Surface Area: 95; (9)Heavy Atom Count: 26; (10)Complexity: 575; (11)Undefined Atom StereoCenter Count: 1; (12)Covalently-Bonded Unit Count: 2.

When you are using this chemical, please be cautious about it as the following:
It can causes burns. And it is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

People can use the following data to convert to the molecule structure.
1. SMILES: [Na+].[O-]c1ccc(cc1)C3(OS(=O)(=O)c2ccccc23)c4ccc([O-])cc4;
2. InChI: InChI=1/C19H14O5S.Na/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19;/h1-12,20-21H;/q;+1/p-2.

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Product Name

Phenol red sodium salt

Phenol red sodium salt Synthetic route

Phenol red sodium salt Specification

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