Methyl Red hydrochloride
Methyl Red hydrochloride (CAS 63451-28-5), with the linear formula (CH3)2NC6H4N=NC6H4CO2H·HCl and a molecular weight of 305.76, is a pH indicator. It exhibits a distinct colour change from pink in acidic solutions to yellow in alkaline conditions. Primarily utilised in analytical chemistry for titrations, it also finds applications in various biological staining procedures within cell biology and histology laboratories.
- IUPAC
- 4-Dimethylaminoazobenzene-2′-carboxylic acid hydrochloride,Acid Red 2
- Synonyms
- 4-Dimethylaminoazobenzene-2′-carboxylic acid hydrochlorideAcid Red 2
pH Indicator
Methyl Red hydrochloride serves as a vital pH indicator, displaying a colour transition from pink to yellow within the pH range of 4.2 to 6.2. This characteristic makes it ideal for acid-base titrations in analytical chemistry.
Biological Staining
The compound is employed in histological and cell biology staining techniques. Its differential colouration properties aid in the visualisation and differentiation of cellular structures and tissues.
Laboratory Reagent
As a versatile laboratory reagent, Methyl Red hydrochloride is used in diverse research and testing applications requiring pH monitoring or differential staining.
| Molecular weight | 305.76 |
|---|---|
| Linear formula | (CH3)2NC6H4N=NC6H4CO2H·HCl |
| Melting point | 175 °C (dec.)(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 13020 |
|---|---|
| Absorption | λmax 493 nm |
| Synonym | 4.2 - 6.2, pink to yellow |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Methyl Red hydrochloride used for?
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Methyl Red hydrochloride is primarily used as a pH indicator in analytical chemistry for acid-base titrations. It is also utilized in cell biology and histology for various staining procedures.
What are the CAS number and formula for Methyl Red hydrochloride?
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The CAS number for Methyl Red hydrochloride is 63451-28-5. Its linear formula is (CH3)2NC6H4N=NC6H4CO2H·HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl Red hydrochloride typically as a research or technical grade. We do not represent this product as USP, BP, EP, or pharmacopoeia grade unless explicitly stated in the product specifications.
What are the safety and handling precautions for Methyl Red hydrochloride?
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Methyl Red hydrochloride is classified with a WGK Germany rating of 3, indicating a high hazard to water. Handling requires appropriate personal protective equipment, including eyeshields, gloves, and a type N95 (US) or type P1 (EN143) respirator filter. It has a melting point of approximately 175 °C (dec.).
How is Methyl Red hydrochloride packed, shipped, and exported?
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Tech Serve Solutions offers expert packing, shipping, and global export services for Methyl Red hydrochloride, adhering to all relevant international regulations for chemical transport.
How can I request a sample or quote for Methyl Red hydrochloride?
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To request a sample or a quote for Methyl Red hydrochloride, please contact our sales team directly through the website or by calling our dedicated line.
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