Molekula
Methyl Red sodium salt (C15H14N3O2·Na)
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
Methyl Red sodium salt (C15H14N3NaO2) is a pH indicator commonly used in titrations and biochemical assays. It is a sodium salt derivative of methyl red, providing enhanced solubility in aqueous solutions. Available in powder form, it has a molecular weight of 291.28 g/mol, a CAS number of 845-10-3, and is stable at ambient temperatures. No signal word is assigned. Molekula supplies Methyl Red 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.
-
100 g — £91.90 per pack ex VAT · £110.28 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 | Orange to red coloured powder |
| Loss on Drying | ≤ 5% (at 110°C) |
| pH transition interval | Pink- Yellow (4.5 - 6.2) |
| Absorption maximum (pH 4.5) λ1max | 523 – 526 nm |
| Absorption maximum (pH 6.2) λ2max | 430 – 434 nm |
| Absorptivity maximum (A1%/1cm at pH4.5, atλ1max) | 1200 – 1300 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 12768222 |
| CAS Number | 845-10-3 |
| Molecular Formula | C15H14N3NaO2 |
| Molecular Weight | 291.28 |
| SMILES | CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+] |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29270050 |
| Tariff Code | 2927000090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, 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
No alternate names recorded for this product.
Frequently asked questions
What is Methyl Red sodium salt used for?
It is primarily used as a pH indicator in titrations, particularly in the pH range of 4.4 to 6.2, where it changes color from red to yellow.
What is the chemical formula and molecular weight?
The formula is C15H14N3NaO2 with a molecular weight of 291.28 g/mol.
How should Methyl Red sodium salt be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available?
It is available in analytical grade for laboratory use.
Can Molekula supply it in bulk?
Yes, Molekula can supply Methyl Red sodium salt in bulk quantities—please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) upon request.
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.