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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Packing Size:
0.00 Box
For INDIA based requirement mail us at rxmarine@gmail.com  or you may call us +91 22 65113333 / 65115555 / 65119999  while  For Gulf Middle East email id id  dubichem@gmail.com  & Tel No.   00971 9 2242524 / 2242534 We are Operational at following location with STOCK POINT Surat, Kandla, Gandhidham, Mundra, Hazira, Tata, Ranchi, Kolkata, Haldia, Buz Buz, Paradip, Vizag ( Visakhapatnam ), Tuticorin, Cochin, Goa, Mumbai, JNPT, Pirpav, Chennai, Ennore, Fujairah, Sharjah, Dubai, Middle East  


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: Co [+] Read More...
Technical Specifications:
C.A.S. No. 596-01-0
M.F. C28H18O4
M.W. 418.45gm/mole


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 236-240°C