Molekula
Methylthymol Blue sodium salt
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Methylthymol Blue sodium salt is a water-soluble dye used as a pH indicator in analytical chemistry and biochemical assays. It exhibits color changes across a pH range, making it useful in titrations and buffer systems. Available in powder form with a molecular weight of 844.74 g/mol, it has the CAS number 1945-77-3 and the molecular formula C37H40N2Na4O13S. Stored at ambient temperatures, it requires no hazard labeling. Molekula supplies Methylthymol Blue sodium salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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5 g — £77.70 per pack ex VAT · £93.24 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Powder |
| Loss on Drying | ≤10.0% |
| Clarity in Solution | Passes test |
| Visual Transition Interval | From pH 6.5 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 33734389 |
| CAS Number | 1945-77-3 |
| IUPAC Name | tetrasodium;2-[[5-[3-[3-[[bis(carboxylatomethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxylatomethyl)amino]acetate |
| EC Number | 217-743-3 |
| Molecular Formula | C37H40N2Na4O13S |
| Molecular Weight | 844.74 |
| Exact Mass | 844.1842 |
| SMILES | CC1=C(C=C(C(=C1CN(CC(=O)[O-])CC(=O)[O-])O)C(C)C)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C(=C(C(=C4)C(C)C)O)CN(CC(=O)[O-])CC(=O)[O-])C.[Na+].[Na+].[Na+].[Na+] |
| InChIKey | DIZZDZCUMBBRSG-UHFFFAOYSA-J |
| InChI | InChI=1S/C37H44N2O13S.4Na/c1-19(2)23-11-28(21(5)25(35(23)48)13-38(15-31(40)41)16-32(42)43)37(27-9-7-8-10-30(27)53(50,51)52-37)29-12-24(20(3)4)36(49)26(22(29)6)14-39(17-33(44)45)18-34(46)47;;;;/h7-12,19-20,48-49H,13-18H2,1-6H3,(H,40,41)(H,42,43)(H,44,45)(H,46,47);;;;/q;4*+1/p-4 |
| PubChem CID | 73037 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- DIZZDZCUMBBRSG-UHFFFAOYSA-J
- Methylthymol blue
- Methylthymol blue sodium
- Methylthymol Blue Sodium Salt ACS grade
- Methylthymol blue tetrasodium
- Methylthymol Blue tetrasodium salt
- Methylthymol Blue W/S
- Methylthymolblau
- Tetrasodium N,N'-(3H-2,1-benzoxathiol-3-ylidenebis((6-hydroxy-5-is
Frequently asked questions
What is Methylthymol Blue sodium salt used for?
It is primarily used as a pH indicator in analytical chemistry, especially in complexometric titrations involving metal ions.
What is the chemical formula and molecular weight of Methylthymol Blue sodium salt?
The formula is C37H40N2Na4O13S with a molecular weight of 844.74 g/mol.
How should Methylthymol Blue sodium salt be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for Methylthymol Blue sodium salt?
It is available in analytical grade for laboratory use.
Can Molekula supply Methylthymol Blue sodium salt in bulk?
Yes, Molekula can supply this compound in bulk quantities—please contact our sales team for details.
What documentation comes with an order of Methylthymol Blue sodium salt?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.