98% Rouge de crésol en vrac de l'usine ISO
Rouge de crésol 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.
Dans Dans les laboratoires et les industries de protection de l'environnement, il est utilisé comme indicateur acide-base, colorant et indicateur bicolore.
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 vous recherchez des fabricants de rouge de crésol en Chine, veuillez nous contacter pour un devis gratuit maintenant.
Pourquoi nous choisir comme fournisseur de rouge de crésol en Chine ?
1. Stock stable pour une expédition rapide
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.
Une fois que la quantité en stock tombe en dessous de 500 kg, nous créerons un calendrier de production pour assurer un approvisionnement stable.
2 : Une pureté élevée équivaut à une qualité élevée
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.
Applications et spécifications
Téléchargement des documents techniques
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:
Hématologie — 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
Nom du produit: Rouge de crésol en vrac
Numéro CAS: 1733-12-6
Autres noms: Rouge de O-crésol, O-crésolsulfonephtaléine, crésolsulfophtaléine, o-crésolsulfonephtaléine.
Formule chimique: C21H18O5S
Poids moléculaire: 382,4 g/mol
Nom chimique: 4-[3-(4-hydroxy-3-méthylphényl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-méthylphénol.
Code SH: 2934991000 (Sulfolactone et sulfolactame-磺内酯及磺内酰胺)
Options d'expédition: Suitable for air, sea, and rail shipping.
Pureté ou dosage: 98% comme Min
Normes: Normes d'entreprise
Certificats disponibles: ISO
Documents disponibles:COA
Capacité d'approvisionnement: 50 tonnes par an
Quantité minimale de commande: 1 KG
Délai de mise en œuvre: 3~5 days for quantities under 200 KG; 7~8 days for orders under 400 KG.
État des stocks: Plus de 400 kg
Température d'expédition: Température ambiante
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