METHYLTHYMOL BLUE

METHYLTHYMOL BLUE
  • CAS No.:1945-77-3
Other grades of this product :
METHYLTHYMOL BLUE Basic information
Product Name:METHYLTHYMOL BLUE
Synonyms:THYMOLSULFONEPHTHALEINDI-(METHYL-IMINODIACETIC ACID) SODIUM SALT;ethyl)-3,1-phenylene]methylene]]bis[n-(carboxymethyl)-,s,s-dioxide,tetrasodiu;glycine,n,n’-[3h-2,1-benzoxathiol-3-ylidenebis[[6-hydroxy-2-methyl-5-(1-methyl;Glycine,N,N’-[3H-2,1-benzoxathiol-3-ylidenebis[[6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene]methylene]]bis[N-(carboxymethyl)-,S,S-dioxide,tetrasodiumsalt;Methylthymol Blue W/S;N-Methylthymol, Blue Sodium Salt, Reagent;MTB, Thymolsulfonphthalein-3μ,3-bis(methyliminodiacetic acid sodium salt), 3,3μ-Bis[N,N-di(carboxymethyl)aminomethyl]thymolsulfonephthalein sodium salt;3,3-Bis[3-[bis(sodiooxycarbonylmethyl)aminomethyl]-4-hydroxy-5-isopropyl-2-methylphenyl]-3H-2,1-benzoxathiole 1,1-dioxide
CAS:1945-77-3
MF:C37H40N2Na4O13S
MW:844.74
EINECS:217-743-3
Product Categories:Analytical Chemistry;Chelating Reagents;Complexones;Photometric Reagents (Complexone)
Mol File:1945-77-3.mol
METHYLTHYMOL BLUE Chemical Properties
storage temp. Store below +30°C.
solubility 460g/l
form Powder
color Dark green to reddish-brown
PH6.2 (10g/l, H2O, 20℃)
Water Solubility Soluble in water (460 g/L) at 20°C.
Stability:Stable. Incompatible with strong oxidizing agents.
EPA Substance Registry SystemGlycine, N,N'-[(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[[6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene]methylene]]bis[N-(carboxymethyl)-, tetrasodium salt (1945-77-3)
Safety Information
Hazard Codes Xi
Risk Statements 5-36/37/38
Safety Statements 24/25-36-26-15
WGK Germany 3
TSCA Yes
HS Code 2934 99 90
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALFA English
METHYLTHYMOL BLUE Usage And Synthesis
Chemical Propertiesgreen-brown crystalline powder
UsesMethylthymol Blue sodium salt is used as thymol-containing organic dye. It is used as an indicator for complexometry. It is used in determination of sulfate in rainwater. It combines with silica gel and aids in the separation and preconcentration of trace amounts of heavy metals from some salts.
Purification MethodsMethyl Thymol Blue, sodium salt [1945-77-3] M 844.8, 1.89 x 104 at 435nm, pH 5.5, 252525 25 25 25 25pK 1 3.0, pK 2 3.3, pK 3 3.8, pK 4 7.4 (pK 4 7.2) , pK 5 11.5 pK 6 13.4. The starting material for synthesis is Thymol Blue. Purify it as for Xylenol Orange on in “Heterocyclic Compounds”, Chapter 4. [Tereshin et al. J Anal Chem USSR (Engl Trans) 20 1138 1965, K.rbl & Kakác Collect Czech Chem Commun 23 889 1958, Beilstein 19/8 V 2830.]
METHYLTHYMOL BLUE Preparation Products And Raw materials

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