98% Rojo cresol a granel de fábrica ISO
Rojo cresol is a greenish powder, ranging from green to dark green or brown-red, slightly soluble in water and very soluble in ethanol but insoluble in acetone or benzene.
Its color changes from orange to yellow between pH 0.2 and 1.8 and from yellow to purple between pH 7.0 and 8.8.
En En laboratorios e industrias de protección ambiental, se utiliza como indicador ácido-base, colorante e indicador de dos colores.
Generally, people dilute it to a 0.1% elution or to a 0.04% sodium salt aqueous solution as an indicator.
For example, it is used as a pH-sensitive indicator dye in nano-optical urea biosensor membranes and in heteronuclear-structured fiber-optic pH sensors.
Si está buscando fabricantes de rojo cresol en China, Por favor contáctenos ahora para una cotización gratuita.
¿Por qué elegirnos como su proveedor de rojo cresol en China?
1. Stock estable para envío inmediato
As China’s largest manufacturer of cresol red, we maintain a rotating stock of over 1,000 kg, ready to fulfill urgent orders from our regular and new customers.
Una vez que la cantidad de stock caiga por debajo de 500 kg, crearemos un programa de producción para garantizar un suministro estable.
2: Alta pureza equivale a alta calidad
We adhere to the ISO 9001 guidelines in our production, and our purity is at least 98%.
Due to our strict adherence to our production procedures, our purity consistently exceeds 98% as a fine powder. Ask us for a sample to verify.
Aplicaciones y especificaciones
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Analytical Chemistry & pH Indicator (Largest Segment)
Cresol Red is one of the most widely used pH indicators in analytical chemistry:
Routine pH assessments — in microbial culture media preparations
Titrations — acid-base titrations requiring precise endpoint detection
Colorimetric pH sensors — monitoring dissolved CO₂ in natural waters
Quality control — in pharmaceutical and food manufacturing
Buffer preparation — verifying the pH of buffer solutions
Molecular Biology & Electrophoresis (High-Growth Segment)
Cresol Red has become an essential tool in molecular biology laboratories:
Electrophoresis tracking dye — in DNA, RNA (agarose), and protein (polyacrylamide) electrophoresis
Apparent molecular size — in agarose, Cresol Red runs with an apparent molecular size of approximately 125 bp DNA
PCR reagent systems — suitable constituents of PCR reagent systems
Taq polymerase compatibility — Cresol Red does not inhibit Taq polymerase
Urease detection — commonly used with lead acetate for the detection of urease after PAGE
Diagnostic & Clinical Applications
Cresol Red is widely used in diagnostic assay manufacturing:
Hematología — diagnostic assays and hematological testing
Histology — tissue staining and histological analysis
Medical diagnostics — pH-based diagnostic tests
Research use only (RUO) — in vitro diagnostic research
Food & Beverage Analysis
Cresol Red is used in food and beverage quality control:
pH testing — in food and beverage manufacturing
Quality assurance — monitoring acidity and alkalinity
Beverage analysis — carbonated beverage pH monitoring
Environmental & Water Quality Monitoring
Cresol Red plays a role in environmental analysis:
Water quality monitoring — pH assessment in natural waters
Colorimetric sensors — monitoring dissolved CO₂ in natural water sources
Environmental research — water quality and pollution studies
Nombre del producto: Rojo cresol a granel
Número CAS: 1733-12-6
Otros nombres: Rojo O-Cresol, O-Cresolsulfonftaleína, Cresolsulfoftaleína, o-Cresolsulfonftaleína.
Fórmula química:C21H18O5S
Peso molecular:382,4 g/mol
Nombre químico: 4-[3-(4-hidroxi-3-metilfenil)-1,1-dioxo-2,1λ6-benzoxatiol-3-il]-2-metilfenol.
Código HS: 2934991000 (Sulfolactona y sulfolactama-磺内酯及磺内酰胺)
Opciones de envío: Suitable for air, sea, and rail shipping.
Pureza o Ensayo:98% como mínimo
Normas:Estándares empresariales
Certificados disponibles:ISO
Documentos disponibles: Certificado de autenticidad
Capacidad de suministro:50 toneladas por año
Cantidad mínima de pedido:1 kilogramo
Plazo de entrega: 3~5 days for quantities under 200 KG; 7~8 days for orders under 400 KG.
Estado del stock:Más de 400 kg
Temperatura de envío:Temperatura ambiente
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