Phenol Red CAS 143-74-8 3, 3-Bis (p-hydroxyphenyl) -3h-2, 1-Benzoxathiole 1, 1-Dioxide

• CAS No.: 143-74-8
• Formula: C19h14o5s
• EINECS: 205-609-7
• Appearance: Powder
• Grade Standard: Industrial Grade
• Shelf Life: 2 Years
• Model NO.: SUREST-62
• Stock: Available
• Molecular Weight: 354.38
• Color: Red
• Melting Point: 300 ºC
• Water Solubility: 0.77 G/L
• Transport Package: 25kg or 200 Kg/Barrel
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 2934991000
• Production Capacity: 1000 Tons Yearly

Product Description

Phenol Red

 

Name	Phenol Red
Synonyms	Phenolsulfonephthalein; 3,3-Bis(p-hydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide
Molecular Structure
Molecular Formula	C19H14O5S
Molecular Weight	354.38
CAS Registry Number	143-74-8
EINECS	205-609-7

Properties

Melting point	300 ºC
Water solubility	0.77 g/L

Chemical Property/Description
Red to dark red crystalline powder
Solubility: slightly soluble in water, easily soluble in ethanol and alkali solution, 1g this product is soluble in 1300ml water, about 350ml alcohol, 500ml almost insoluble in ether ,soluble in alkali hydroxide or carbonate alkali solution is dark red, stable in air.


Main Uses:
Acid-base indicator; Total blood carbon dioxide measurement; The indicator of preparing disaccharide ferric urea medium in bacterial serum test.

 1, Acid-base indicator, color range pH:6.8 (yellow) -8.4 (red)
2,Blood carbon dioxide measurement, bacterial serum test in the preparation of disaccharide ferric urea medium indicator. Its sodium salt is used to measure liver function. It is also used in biochemical research.

 0.1% aqueous solution is a commonly used acid-base indicator, pH value color range 3.1(red)-4.4(yellow), determination of most mineral acids, alkali and water alkalinity. Volumetric tin (Sn2+(2+ superscript) discolors methyl orange when hot). Achromatic indicator for strong reducing agents (Ti3+(3+ superscript), Cr2+(2+ superscript) and strong oxidants . Determination ,  by spectrophotometry. It can be combined with sodium indigo disulfonate or bromocresol green to form a mixed indicator to shorten the color range and improve the sharpness of the color change. REDOX indicator, such as  titration of trivalent or antimony.