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ChemicalBook > Product Catalogue >Biochemical Engineering >Biochemical Reagents >Acid-base indicator >alpha-Naphtholphthalein

alpha-Naphtholphthalein

alpha-Naphtholphthalein Structure
  • ₹990 - ₹331559.99
  • Product name: alpha-Naphtholphthalein
  • CAS: 596-01-0
  • MF: C28H18O4
  • MW: 418.44
  • EINECS:209-875-5
  • MDL Number:MFCD00036202
  • Synonyms:1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-1-naphthalenyl)-;à-naphtholphthalein;3,3-bis(4-hydroxy-1-naphthyl)phthalide;A-NAPHTHOLPHTHALEIN PRACTICAL GRADE;ALPHA-NAPHTHOLPHTHALEIN INDICATOR;1-NAPHTHOLPHTHALEIN, INDICATOR;ALPHA-NAPHTHOLPHTHALEIN(0.1% IN CA. 50% ETHANOL)[FOR PH DETERMINATION];alpha-Naphtholphthalein, indicator, pure
Price14 Properties Safety Information Description
14 prices
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Brand

  • ALFA India
  • TCI Chemicals (India)
  • Sigma-Aldrich(India)
  • ottokemi

Package

  • 1gm
  • 1g
  • 5g
  • 5gm
  • 10G
  • 25g
  • 25gm
  • 100G
  • ManufacturerALFA India
  • Product numberALF-041221-03
  • Product descriptionalpha-Naphtholphthalein
  • Packaging1g
  • Price₹2839
  • Updated2022-05-26
  • Buy
  • ManufacturerALFA India
  • Product numberALF-041221-06
  • Product descriptionalpha-Naphtholphthalein
  • Packaging5g
  • Price₹9687
  • Updated2022-05-26
  • Buy
  • ManufacturerALFA India
  • Product numberALF-041221-14
  • Product descriptionalpha-Naphtholphthalein
  • Packaging25g
  • Price₹26543
  • Updated2022-05-26
  • Buy
  • ManufacturerTCI Chemicals (India)
  • Product numberN0031
  • Product descriptionα-Naphtholphthalein
  • Packaging1G
  • Price₹2200
  • Updated2022-05-26
  • Buy
  • ManufacturerTCI Chemicals (India)
  • Product numberN0031
  • Product descriptionα-Naphtholphthalein
  • Packaging5G
  • Price₹5400
  • Updated2022-05-26
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product numberN8257
  • Product descriptionα-Naphtholphthalein practical grade
  • Packaging1G
  • Price₹9969.83
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product numberN8257
  • Product descriptionα-Naphtholphthalein practical grade
  • Packaging5G
  • Price₹20134.5
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product numberN8257
  • Product descriptionα-Naphtholphthalein practical grade
  • Packaging10G
  • Price₹30028.55
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number1.06246
  • Product description1-Naphtholphthalein indicator
  • Packaging1G
  • Price₹33150.01
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number1.06246
  • Product description1-Naphtholphthalein indicator
  • Packaging5G
  • Price₹37890
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number1.06246
  • Product description1-Naphtholphthalein indicator
  • Packaging100G
  • Price₹331559.99
  • Updated2022-06-14
  • Buy
  • Manufacturerottokemi
  • Product number N 1265
  • Product descriptionα-Naphthol phthalein
  • Packaging1gm
  • Price₹990
  • Updated2022-05-26
  • Buy
  • Manufacturerottokemi
  • Product number N 1265
  • Product descriptionα-Naphthol phthalein
  • Packaging5gm
  • Price₹2979
  • Updated2022-05-26
  • Buy
  • Manufacturerottokemi
  • Product number N 1265
  • Product descriptionα-Naphthol phthalein
  • Packaging25gm
  • Price₹7389
  • Updated2022-05-26
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
ALFA India ALF-041221-03 alpha-Naphtholphthalein 1g ₹2839 2022-05-26 Buy
ALFA India ALF-041221-06 alpha-Naphtholphthalein 5g ₹9687 2022-05-26 Buy
ALFA India ALF-041221-14 alpha-Naphtholphthalein 25g ₹26543 2022-05-26 Buy
TCI Chemicals (India) N0031 α-Naphtholphthalein 1G ₹2200 2022-05-26 Buy
TCI Chemicals (India) N0031 α-Naphtholphthalein 5G ₹5400 2022-05-26 Buy
Sigma-Aldrich(India) N8257 α-Naphtholphthalein practical grade 1G ₹9969.83 2022-06-14 Buy
Sigma-Aldrich(India) N8257 α-Naphtholphthalein practical grade 5G ₹20134.5 2022-06-14 Buy
Sigma-Aldrich(India) N8257 α-Naphtholphthalein practical grade 10G ₹30028.55 2022-06-14 Buy
Sigma-Aldrich(India) 1.06246 1-Naphtholphthalein indicator 1G ₹33150.01 2022-06-14 Buy
Sigma-Aldrich(India) 1.06246 1-Naphtholphthalein indicator 5G ₹37890 2022-06-14 Buy
Sigma-Aldrich(India) 1.06246 1-Naphtholphthalein indicator 100G ₹331559.99 2022-06-14 Buy
ottokemi N 1265 α-Naphthol phthalein 1gm ₹990 2022-05-26 Buy
ottokemi N 1265 α-Naphthol phthalein 5gm ₹2979 2022-05-26 Buy
ottokemi N 1265 α-Naphthol phthalein 25gm ₹7389 2022-05-26 Buy

Properties

Melting point :238-240 °C(lit.)
Boiling point :496.21°C (rough estimate)
Density :1.1532 (rough estimate)
vapor density :14.44 (vs air)
refractive index :1.6400 (estimate)
storage temp. :Store below +30°C.
solubility :Solubility Practically insoluble in water; soluble in ethanol
pka :8.0, 8.2, 8.5(at 25℃)
form :Powder
color :Pink to beige or brown
PH Range :7.1(brownish)-8.3(blue/green)
PH :pH : 7.1～8.7
Odor :Characteristic odour
Water Solubility :Soluble in ethanol. Insoluble in water.
λmax :648nm
Merck :14,6389
BRN :97816
InChIKey :HQHBAGKIEAOSNM-UHFFFAOYSA-N
CAS DataBase Reference :596-01-0(CAS DataBase Reference)

Safety Information

Symbol(GHS): GHS hazard pictograms
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning GHS hazard pictograms
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Description

Indicator in 0.1% or 0.04% alcohol solution.α-Naphtholphthalein is used as a pH indicator and operates in the pH ranges between 7.3 and 8.7. It is also used in the designing of optical carbon dioxide sensor based on fluorescence intensity.

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Suppliers and manufacturers

Arnish Laborates Pvt Ltd Esjay Chemicals GSP Dyes and Chemicals Pvt.Ltd DeFINE CHEMICALS Belami Fine Chemicals Pvt. Ltd. Arnish Laborates Private Limited ALPHA CHEMIKA CHEMSWORTH A.J Chemicals Otto Chemie Pvt. Ltd.