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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.   

pH Indicator manufacturer and supplier. Ready available stock of 1NAPHTHOLPHTHALEIN in various size and packing enable us to full fill demand of our regular customer with immediate effect. 1NAPHTHOLPHTHALEIN available in Mumbai, Kandla - Gandhidham, Surat, Visakhapatnam, Chennai, Kolkata - INDIA, Fujairah - Dubai, Middle East UAE.

Article News:
Packing Size:
1.00 Grams
Available Packing Size:

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

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.
Using 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 
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 Appear [+] Read More...
Technical Specifications:
C.A.S. No. 596-01-0,
Physical State : Black Powder
Insoluble in water
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 238-240 °C(lit.)

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

HS CODE : 32049000

Question: How do I book material ?

Answer: Please note you are eligible to get heavy discount  for each deal. Please update your profile, so we can help you with your bookings.
Question: I want to know the address details of Branch.
Answer: We are happily delivering most of the areas. Please specify your location where from you need the delivery.
Question: Can I replace the materials ?
Answer: Generally, we are only supplying our quality approved product, But before purchasing you may ask for single unit purchase. However, if your purchase  is within our ware house distribution limit  you may use our replacement policy.
Question: Can I book our materials from our home location to other branch sector ?
Answer: Location change is  allowed by our various  located  company. For example  If your home location is Kandla, And your ship arrival plans have changed from Kandla to Chennai,  you are eligible to get materials from our chennai loation on same price. 

Question: Can I work as commision agent ?
Answer: As per our working policy,  you are eligible for maximum 2% as a trade discount. Companies may oblige correction of discount, subject to approval. 
Discount Plan, Choose your special offer.
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For INDIA based requirement mail us at  or you may call us +91 9652288588 / 09652288988 / 09004328440 / 09004328916  while  For Gulf Middle East email id id  & 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, Manglore, Chennai, Ennore, Fujairah, Sharjah, Dubai, Abudhabi Mussafah Middle East  



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