Over 500 KG 98% Cresol Red Powder With Best Offer
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Why Import Cresold Red From Us?
1. Steady Stock For Prompt Shipment
We keep a steady constant stock of over 500 KG ready for urgent orders from our regular and new customers
Once the stock quantity is less than 500 KG, we would make a production schedule and make sure our stock is not less than 400~500 KG.
2: High Purity Makes Sure of High Quality
We stick to the guidelines of ISO9001 for our production and our enterprise standard for its purity is 98% as a minimum.
Due to our strict conformation on its production procedure, our purity is always above 98% in form of a fine powder.
What is Cresol Red?
Cas Number: 1733-12-6
Other Names: O-Cresol red, O-Cresolsulfonphthalein, Cresolsulfophthalein, o-Cresolsulfonephthalein.
Chemical Formula: C21H18O5S
Molecular Weight: 382.4 g/mol
Chemical Name: 4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-methylphenol.
HS Code: 2934991000 (Sulfolactone and sulfolactam-磺内酯及磺内酰胺)
Cresol red is a green to dark green or brown-red, greenish powder slightly soluble in water, but very soluble in ethanol, insoluble in acetone or benzene.
Its color changes from orange to yellow between pH 0.2-1.8 and from yellow to purple between pH 7.0-8.8.
It is an acid-base indicator, a dye, and a two-color indicator commonly used in environment-protection industries.
For example, it is used as pH-sensitive indicator dyes in nano-optical urea biosensor membranes and heteronuclear structured fiber optic pH sensors.