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HomeProduct name listXYLENOL ORANGE

XYLENOL ORANGE

Synonym(s):3,3′-Bis[N,N-bis(carboxymethyl)aminomethyl]-o-cresolsulfonephthalein disodium salt

  • CAS NO.:1611-35-4
  • Empirical Formula: C31H32N2O13S
  • Molecular Weight: 672.66
  • MDL number: MFCD00014580
  • EINECS: 216-553-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-08-21 22:41:43
XYLENOL ORANGE Structural

What is XYLENOL ORANGE?

Chemical properties

Red solid

The Uses of XYLENOL ORANGE

Xylenol Orange is used in method for detecting main content of tungsten oxide.

Purification Methods

It is generally contaminated with starting material (cresol red) and semi-xylenol orange. Purify it by ion-exchange chromatography using DEAE-cellulose, eluting with 0.1M NaCl solution, which will give the sodium salt [3618-43-7].Cresol Red, semi-xylenol orange and iminodiacetic acid bands elute first. This procedure will give the sodium salt of the dye.To obtain the free acid, dissolve the salt in H2O and acidify it with AcOH. Filter it off, wash it with H2O and dry it first in air and then in a vacuum desiccator over P2O5 in the dark [Sato et al. Anal Chim Acta 94 317 1977]. [Beilstein 19 II 111, 19 III/IV 1135, 19/3 V 461.]

Properties of XYLENOL ORANGE

Melting point: 72-76 °C(lit.)
Boiling point: 895.1±65.0 °C(Predicted)
Density  1.564±0.06 g/cm3(Predicted)
storage temp.  -20°C
solubility  Solubility Soluble in water, ethanol
pka 2.6, 6.4, 6.5, 10.5, 12.3(at 25℃)
form  powder
color  Brown
PH Range Yellow (6.4) to orange-red (10.4)
λmax 580nm
Major Application Solar cells, cosmetics, determination of aluminum,nickel,bismuth,thallium,lead,zinc,palladium,mercury,proteins,lipids
EPA Substance Registry System Glycine, N,N'-[(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)- (1611-35-4)

Safety information for XYLENOL ORANGE

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for XYLENOL ORANGE

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