METHYLTHYMOL BLUE

METHYLTHYMOL BLUE Basic information
Product Name:METHYLTHYMOL BLUE
Synonyms:MTB;Methylthymol Blue, tetrasodium salt, water soluble, pure;tetrasodium N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[[6-hydroxy-5-isopropyl-2-methylphen-3,1-ylene]methylene]]bis[N-(carboxylatomethyl)aminoacetate] S,S-dioxide;METHYL THYMOL BLUE INDICATOR FOR METAL T ITRATION;METHYLTHYMOL BLUE SODIUM SALT FOR &;METHYLTHYMOL BLUE SODIUM;MethylThymolBlueGr(PhIndicator);Methylthymol bule complexone
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 Structure
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
ACROS English
SigmaAldrich 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
BTB Thymol blue indicator liquid Acid chrome blue K Methyl thymol blue indicator Thymolphthalein XYLENOL ORANGE Bromine thymol solution Methyl Red sodium salt 8-Hydroperoxy-p-cymene Isobornyl methacrylate Thymol blue sodium salt Methacrylamide Thymol Blue Methylthymol blue, sodium salt, indicator grade Thymol THYMOL BLUE METHYLTHYMOL BLUE, PENTASODIUM SALT, PURE, 96,Methylthymol Blue, pentasodium salt, pure, 96% METHYLTHYMOL BLUE PENTASODIUM SALT

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