METHYLTHYMOL BLUE
Synonym(s):Methylthymol blue sodium salt
- CAS NO.：1945-77-3
- Empirical Formula: C37H40N2Na4O13S
- Molecular Weight: 844.74
- MDL number: MFCD00148905
- EINECS: 217-743-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-23 13:36:13
What is METHYLTHYMOL BLUE?
Chemical properties
green-brown crystalline powder
The Uses of METHYLTHYMOL BLUE
Methylthymol 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 Methods
Methyl 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.]
Properties of METHYLTHYMOL BLUE
| storage temp. | Store below +30°C. |
| solubility | 460g/l |
| form | Powder |
| color | Dark green to reddish-brown |
| PH | 6.2 (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 System | Glycine, 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 for METHYLTHYMOL BLUE
Computed Descriptors for METHYLTHYMOL BLUE
| InChIKey | DIZZDZCUMBBRSG-UHFFFAOYSA-J |
| SMILES | C1C=C2C(C3C=C(C(C)C)C(O)=C(CN(CC(O[Na])=O)CC(O[Na])=O)C=3C)(C3C=C(C(C)C)C(O)=C(CN(CC(O[Na])=O)CC(O[Na])=O)C=3C)OS(=O)(=O)C2=CC=1 |
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