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1-NAPHTHOLPHTHALEIN

1-NAPHTHOLPHTHALEIN
Stains Indicator Reagents-69
Product code  RXSOL-69-5960-100

1-NAPHTHOLPHTHALEIN excellent quality manufacturer, exporter and supplier. 1-Naphtholphthalein (C28H18O4) is a pH indicator with a visual transition from colorless/reddish to greenish blue at pH 7.3 – 8.7.

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Supply to Kandla, Mundra & Sikka ports Bulk & custom packaging Technical support included

Product Description

1-NAPHTHOLPHTHALEIN  excellent quality manufacturer, exporter and supplier. 1-Naphtholphthalein (C28H18O4) is a pH indicator with a visual transition from colorless/reddish to greenish blue at pH 7.3 – 8.7. 
 

Application & Usage

As indicator in 0.1% or 0.04% solution in alcohol. pH 7.3 colorless to reddish; 8.7 greenish to blue. Particularly adapted for weak acids in strong alcoholic solution.

Technical Specifications

C.A.S. No. 596-01-0,
Physical State : Black Powder
Insoluble in water
M.F. C28H18O4
M.W. 418.45gm/mole

Specifications:

Solubility 0.1 % (95% EtOH) Almost Clear solution
Absorption maximum (in 0.1N NaOH) ?max 650-654nm
Absorptivity 1%/1cm (in 0.1N NaOH) at ?max >650
Loss On Drying (110°C) 3%
Melting Point Range 238-240 °C(lit.)

Remarks / Precautions

Range7.1(brownish)-8.3(blue/green) Water Solubility  Insoluble in water. Soluble in ethanol.

Procedure

pH 7.1 - pH 8.3 pink brownish - blue

Storage of liquid indicator : storage temp. Store below +30°C.solubility Solubility Practically insoluble in water; soluble in ethanol 

Notes

Molar mass: 418.45 g/mol
Appearance: Colorless-reddish to blue-green solid
Chemical formula: C28H18O4
Solubility in water: Insoluble
 
Solubility in water: InsolubleMolar mass: 418.45 g/mol
Appearance: Colorless-reddish to blue-green solid
Chemical formula: C28H18O4
Solubility in water: Insoluble

Other Names

Naphtholphthalein pH Indicator solid

Packing Sizes

1 Gram, 5 Gram, 50 Gram bottle available on factory sale price.

Supply Locations

1-NAPHTHOLPHTHALEIN manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai, Sharjah, UAE, Gulf, Middle East, Muscat Oman, Kenya Africa. Get the best quality of 1-NAPHTHOLPHTHALEIN at a competitive price from us. We have ready stock of 1-NAPHTHOLPHTHALEIN in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.

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