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ChemicalBook > Product Catalogue >Biochemical Engineering >Biochemical Reagents >Acid-base indicator >p-Naphtholbenzein

p-Naphtholbenzein

p-Naphtholbenzein Structure
  • ₹3041.83 - ₹27177
  • Product name: p-Naphtholbenzein
  • CAS: 145-50-6
  • MF: C27H18O2
  • MW: 374.43
  • EINECS:205-656-3
  • MDL Number:MFCD00078492
  • Synonyms:α-Naphtholbenzein,4,4′-(α-Hydroxybenzylidene)di-1-naphthol, p-naphtholbenzein;alpha-Naphtholbenzein, pure, 90% 10GR;alpha-Naphtholbenzein, pure, 90% 25GR;1-NAPHTHOLBENZEIN INDICATOR 5 G;α- naphthol quinone phenylMethane;MAG BIND EQUIPURE GDNA (1X96);1-Naphtholbenzein indicator Reag. Ph Eur;1(4H)-Naphthalenone, 4-(4-hydroxy-1-naphthalenyl)phenylmethylene-
Price9 Properties Safety Information Description
9 prices
Selected condition：

Brand

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

Package

  • 5G
  • 10G
  • 25G
  • 50G
  • 100g
  • ManufacturerTCI Chemicals (India)
  • Product numberN0028
  • Product descriptionp-Naphtholbenzein
  • Packaging25G
  • Price₹10900
  • Updated2022-05-26
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number291099
  • Product descriptionα-Naphtholbenzein indicator grade
  • Packaging5G
  • Price₹3041.83
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number70480
  • Product descriptionα-Naphtholbenzein indicator (pH 8.2-10.0)
  • Packaging10G
  • Price₹5347.55
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number1.06202
  • Product description1-Naphtholbenzein indicator Reag. Ph Eur
  • Packaging5G
  • Price₹6770
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number291099
  • Product descriptionα-Naphtholbenzein indicator grade
  • Packaging25G
  • Price₹7837.3
  • Updated2022-06-14
  • Buy
  • ManufacturerSigma-Aldrich(India)
  • Product number70480
  • Product descriptionα-Naphtholbenzein indicator (pH 8.2-10.0)
  • Packaging50G
  • Price₹17807.13
  • Updated2022-06-14
  • Buy
  • ManufacturerALFA India
  • Product numberALF-A16125-22
  • Product descriptionalpha-Naphtholbenzein
  • Packaging100g
  • Price₹27177
  • Updated2022-05-26
  • Buy
  • ManufacturerALFA India
  • Product numberALF-A16125-14
  • Product descriptionalpha-Naphtholbenzein
  • Packaging25g
  • Price₹11236
  • Updated2022-05-26
  • Buy
  • ManufacturerALFA India
  • Product numberALF-A16125-06
  • Product descriptionalpha-Naphtholbenzein
  • Packaging5g
  • Price₹3318
  • Updated2022-05-26
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
TCI Chemicals (India) N0028 p-Naphtholbenzein 25G ₹10900 2022-05-26 Buy
Sigma-Aldrich(India) 291099 α-Naphtholbenzein indicator grade 5G ₹3041.83 2022-06-14 Buy
Sigma-Aldrich(India) 70480 α-Naphtholbenzein indicator (pH 8.2-10.0) 10G ₹5347.55 2022-06-14 Buy
Sigma-Aldrich(India) 1.06202 1-Naphtholbenzein indicator Reag. Ph Eur 5G ₹6770 2022-06-14 Buy
Sigma-Aldrich(India) 291099 α-Naphtholbenzein indicator grade 25G ₹7837.3 2022-06-14 Buy
Sigma-Aldrich(India) 70480 α-Naphtholbenzein indicator (pH 8.2-10.0) 50G ₹17807.13 2022-06-14 Buy
ALFA India ALF-A16125-22 alpha-Naphtholbenzein 100g ₹27177 2022-05-26 Buy
ALFA India ALF-A16125-14 alpha-Naphtholbenzein 25g ₹11236 2022-05-26 Buy
ALFA India ALF-A16125-06 alpha-Naphtholbenzein 5g ₹3318 2022-05-26 Buy

Properties

Melting point :230-235 °C(lit.)
Boiling point :463.44°C (rough estimate)
Density :1.0946 (rough estimate)
vapor density :12.9 (vs air)
refractive index :1.4875 (estimate)
storage temp. :Store at +5°C to +30°C.
solubility :Solubility Insoluble in water; soluble in ethanol, methanol
pka :8.95(at 25℃)
form :Liquid
color :Pale Red-Brown
PH Range :Green (0.0) to yellow (0.8);Yellow (8.2) to green-blue (11.0)
Odor :Odorless
Water Solubility :insoluble
λmax :210nm
BRN :3471575
Stability :Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey :VDDWRTZCUJCDJM-SOYKGTTHSA-N
CAS DataBase Reference :145-50-6(CAS DataBase Reference)
EPA Substance Registry System :1(4H)-Naphthalenone, 4-[(4-hydroxy-1-naphthalenyl)phenylmethylene]- (145-50-6)

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.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
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

α-Naphtholbenzein is used as a pH indicator. (pH 0.0-0.8/ pH 8.2-10.0).

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Suppliers and manufacturers

Arnish Laborates Pvt Ltd Esjay Chemicals CLEARSYNTH LABS LTD. CHEMSWORTH A.J Chemicals Pharmaffiliates Analytics and Synthetics P. Ltd SynZeal Research Pvt Ltd Central Drug House(P) Ltd. LOBA CHEMIE PVT.LTD. TCI Chemicals (India) Pvt. Ltd.