Product Name

  • Name

    XYLENOL ORANGE

  • EINECS 216-553-8
  • CAS No. 1611-35-4
  • Density 1.564 g/cm3
  • Solubility
  • Melting Point 72-76 °C(lit.)
  • Formula C31H32 N2 O13 S
  • Boiling Point 895.1 °C at 760 mmHg
  • Molecular Weight 672.667
  • Flash Point 495.1 °C
  • Transport Information
  • Appearance BROWN CRYSTALS, POWDER OR XTAL PWD
  • Safety 26-39
  • Risk Codes 22-41-43
  • Molecular Structure Molecular Structure of 1611-35-4 (XYLENOL ORANGE)
  • Hazard Symbols HarmfulXn
  • Synonyms Aceticacid, [(a-hydroxy-o-sulfobenzylidene)bis[(6-hydroxy-5-methyl-m-phenylene)methylenenitrilo]]tetra-,g-sultone (7CI);Acetic acid,[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-methyl-m-phenylene)methylenenitrilo]]tetra-,S,S-dioxide (8CI);Glycine, N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)-,S,S-dioxide;Phenolsulfonephthalein,3',3''-bis[[bis(carboxymethyl)amino]methyl]-5',5''-dimethyl- (6CI);Cresol Phthalexon S;NSC 324982;XylenolOrange;o-Cresolphthalexon S;Xylenol orange;
  • PSA 247.89000
  • LogP 2.74860

Xylenol orange Chemical Properties

IUPAC Name: 2-[[5-[3-[3-[[Bis(carboxymethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-1,1-dioxobenzo[c]oxathiol-3-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxymethyl)amino]acetic acid  
Molecular Formula: C31H32N2O13S
Molecular Weight: 672.66
EINECS: 216-553-8
Density: 1.564 g/cm3
Melting Point: 72-76 °C(lit.)
Boiling Point: 895.1 °C at 760 mmHg
Flash Point: 495.1 °C
Freely Rotating Bonds: 16
Polar Surface Area: 181.89 Å2
Index of Refraction: 1.678
Molar Refractivity: 162.29 cm3
Molar Volume: 430 cm3
Polarizability: 64.33 ×10-24 cm3
Surface Tension: 82.8 dyne/cm
Enthalpy of Vaporization: 136.3 kJ/mol
Vapour Pressure: 1.97E-34 mmHg at 25°C 
Solubility:  200 mg/mL in water
 The Cas Register Number  of Xylenol orange is 1611-35-4.The chemical synonyms of Xylenol orange (CAS NO.1611-35-4) are 2,2',2'',2'''-{(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylenenitrilo]}tetraacetic acid ; 2,2',2'',2'''-{(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis[(6-hydroxy-5-methylbenzene-3,1-diyl)methanediylnitrilo]}tetraacetic acid ; Cresol Phthalexon S ; 3,3'-Bis(N,N-di-(carboxymethyl)aminomethyl)cresolsulfonephthalein ; 3,3'-Bis[N, N-di-(carboxymethyl)aminomethyl]cresolsulfonephthalein ; 5',5"-bis((bis(carboxymethyl)amino)methyl)-o-cresolsulfophthal ; Acetic acid, (3H-2,1-benzoxathiol-3-ylidenebis((6-hydroxy-5-methyl-m-phenylene)methylenenitrilo))tetra-, S,S-dioxide (8CI) ; Glycine, N, N'-[[hydroxy(2-sulfophenyl)methylene]bis[(6-hydroxy-5-methyl-3, 1-phenylene)methylene]]bis[N-(carboxymethyl)-, .gamma.-sultone ; Glycine, N,N'-((1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis((6-hydroxy-5-methyl-3,1-phenylene)methylene))bis(N-(carboxymethyl)- ; Glycine, N,N'-(3H-2,1-benzoxathiol-3-ylidenebis((6-hydroxy-5-methyl-3,1-phenylene)methylene))bis(N-(carboxymethyl)-, S,S-dioxide ; m-Cresolphthalexon S ; N,N'-(3H-2,1-Benzoxathiol-3-ylidenebis((6-hydroxy-5-methyl-3,1-phenylene)methylene))bis(N-(carboxy methyl)glycine) S,S-dioxide ; o-Cresolphthalexon S ; Xylenol orange  .The molecular structure of Xylenol orange (CAS NO.1611-35-4) is.

Xylenol orange Uses

  Xylenol orange (CAS NO.1611-35-4) is used as determination indicator of acid-base  and bismuth, thorium, lead, cobalt, copper, iron, aluminum complex indicator .

Xylenol orange Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 23/24/25-36/38-36/37/38 
R23/24/25: Toxic by inhalation, in contact with skin and if swallowed. 
R36/38: Irritating to eyes and skin. 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-45-36/37-26-22-36 
S24/25: Avoid contact with skin and eyes. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37: Wear suitable protective clothing and gloves. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36: Wear suitable protective clothing.
WGK Germany: 3

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