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Manufacturer, Distributor, Supplier, BromoPhenol Red based in visakhapatnam India.

Vizag chemical BromoPhenol Red  or Phenol red exists as a red crystal that is stable in air. Its solubility is 0.77 grams per liter (g/L) in water and 2.9 g/L in ethanol. It is a weak acid with pKa = 8.00 at 20 °C.

A solution of phenol red is used as a pH indicator: its color exhibits a gradual transition from yellow to red over the pH range 6.8 to 8.2. Above pH 8.2, phenol red turns a bright pink (fuchsia) color.
Phenol red (pH indicator)
below pH 6.8         above pH 8.2
6.8     ↔     8.2

o-Cresolphthalein excellent quality manufacturer, exporter and supplier in visakhapatnam india

VIZAG CHEMICAL O Cresolphthalein Manufacturers,O Cresolphthalein Suppliers,O Cresolphthalein Dealers In Visakhapatnam india. o-Cresolphthalein is a phthalein dye used as a pH indicator in titrations. It is insoluble in water but soluble in ethanol. Its solution is colourless below pH 8.2, and purple above 9.8

o-Cresolphthalein is a reversible pH indicator. The kinetics of the reverse pathway (red-purple to colorless) is slow, thereby making it an appropriate molecule to check flow patterns in ducts with corrugated walls.

 

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