High Quality Cresol Red with Cheap Price CAS 1733-12-6 O-Cresolsulfonephthalein

• CAS No.: 1733-12-6
• Formula: C21h17nao5s
• EINECS: 217-064-2
• Classification: Biochemical Reagents
• Grade: Ind
• Specific Usage: For Biological Purpose
• Model NO.: IND
• Content: Ind
• Usage: Laboratory Reagents
• Source: Concrete
• Application: Scientific Research
• Property: Organic Reagent
• Molecular Weight: 382.43
• Density: 1.4±0.1 g/cm3
• Boiling Point: 561.9±50.0 °c at 760 Mmhg
• Melting Point: 290 °c
• Flash Point: 293.6±30.1 °c
• Transport Package: 25 Kgs Fiber Drums
• Trademark: Sinochembt
• Origin: Shenyang
• HS Code: 2922499990
• Production Capacity: 500kgs Per Month

Product Description

Cresol red (full name: o-cresolsulfonephthalein) is a triarylmethane dye frequently used for monitoring the pH in aquaria.Cresol red can be used in many common molecular biology reactions in place of other loading dyes.Cresol red can also be used as an electrophoretic color marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis. In a 1% agarose gel, it runs approximately at the size of a 125 base pair (bp) DNA molecule (it depends on the concentration of buffer and other component). Bromophenol blue and xylene cyanol can also be used for this purpose.

Item                                                                 (Ind)  
pH Visual transition interval                       6.5(Yellow)~8.5(Purple)
Maximum absorption wave length  
    λ1 (pH6.5)                                              432~436
    λ2 (pH8.5)                                              571~574
mass absovptivity
α1 (λ1,pH6.5 dry sample)                           49~67
α2 (λ2,pH8.5 dry sample)                           100~132
Solubility(in ethanol)                                    Pass
Drying loss,%                                               ≤3.0
Ignition residue,%                                         ≤0.2