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ChemicalBook >> CAS DataBase List >> p-Naphtholbenzein

p-Naphtholbenzein

p-Naphtholbenzein price.
  • $16.8 - $617.34
  • 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-
Price13 Properties Safety Information Description
13 prices
Selected condition：
Brand
  • AHH
  • AK Scientific
  • Chem-Impex
  • Labseeker
  • Sigma-Aldrich
  • SynQuest Laboratories
  • TCI Chemical
  • TRC
  • Usbiological
Package
  • 5g
  • 10g
  • 25g
  • 50g
  • 100g
  • 250g
  • ManufacturerAHH
  • Product numberMT-19321
  • Product description1-Naphtholbenzein 90%
  • Packaging250g
  • Price$446
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberL947
  • Product descriptionalpha-Naphtholbenzein
  • Packaging5g
  • Price$37
  • Updated2021-12-16
  • Buy
  • ManufacturerChem-Impex
  • Product number22928
  • Product descriptionα-Naphtholbenzein
  • Packaging250G
  • Price$617.34
  • Updated2021-12-16
  • Buy
  • ManufacturerLabseeker
  • Product numberSC-89236
  • Product descriptionp-Naphtholbenzein 95
  • Packaging100g
  • Price$615
  • Updated2021-12-16
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number291099
  • Product descriptionα-Naphtholbenzein indicator grade
  • Packaging5g
  • Price$62
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number1.06202
  • Product description1-Naphtholbenzein indicator Reag. Ph Eur
  • Packaging5G
  • Price$104
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number70480
  • Product descriptionα-Naphtholbenzein indicator (pH 8.2-10.0)
  • Packaging10g
  • Price$110
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number291099
  • Product descriptionα-Naphtholbenzein indicator grade
  • Packaging25g
  • Price$221
  • Updated2025-07-31
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number70480
  • Product descriptionα-Naphtholbenzein indicator (pH 8.2-10.0)
  • Packaging50g
  • Price$360
  • Updated2025-07-31
  • Buy
  • ManufacturerSynQuest Laboratories
  • Product number2920-1-45
  • Product descriptionalpha-Naphtholbenzein
  • Packaging5G
  • Price$52
  • Updated2021-12-16
  • Buy
  • ManufacturerTCI Chemical
  • Product numberN0028
  • Product descriptionp-Naphtholbenzein
  • Packaging25g
  • Price$267
  • Updated2025-07-31
  • Buy
  • ManufacturerTRC
  • Product numberN369005
  • Product descriptionα-Naphtholbenzein(TechnicalGrade)
  • Packaging5g
  • Price$95
  • Updated2021-12-16
  • Buy
  • ManufacturerUsbiological
  • Product number285440
  • Product descriptionp-Naphtholbenzein
  • Packaging10g
  • Price$319
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
AHH MT-19321 1-Naphtholbenzein 90% 250g $446 2021-12-16 Buy
AK Scientific L947 alpha-Naphtholbenzein 5g $37 2021-12-16 Buy
Chem-Impex 22928 α-Naphtholbenzein 250G $617.34 2021-12-16 Buy
Labseeker SC-89236 p-Naphtholbenzein 95 100g $615 2021-12-16 Buy
Sigma-Aldrich 291099 α-Naphtholbenzein indicator grade 5g $62 2025-07-31 Buy
Sigma-Aldrich 1.06202 1-Naphtholbenzein indicator Reag. Ph Eur 5G $104 2025-07-31 Buy
Sigma-Aldrich 70480 α-Naphtholbenzein indicator (pH 8.2-10.0) 10g $110 2025-07-31 Buy
Sigma-Aldrich 291099 α-Naphtholbenzein indicator grade 25g $221 2025-07-31 Buy
Sigma-Aldrich 70480 α-Naphtholbenzein indicator (pH 8.2-10.0) 50g $360 2025-07-31 Buy
SynQuest Laboratories 2920-1-45 alpha-Naphtholbenzein 5G $52 2021-12-16 Buy
TCI Chemical N0028 p-Naphtholbenzein 25g $267 2025-07-31 Buy
TRC N369005 α-Naphtholbenzein(TechnicalGrade) 5g $95 2021-12-16 Buy
Usbiological 285440 p-Naphtholbenzein 10g $319 2021-12-16 Buy

Properties

Melting point :230-235 °C(lit.)
Boiling point :463.44°C (rough estimate)
Density :1.0946 (rough estimate)
bulk density :120-300kg/m3
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)
PH :0.0, green
0.8, yellow
10.0, blue-green
8.2, yellow Odor :Odorless
Water Solubility :insoluble
λmax :210nm
ε(extinction coefficient) :≥50000 at 207-213nm in methanol at 0.01g/L
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

Henan Fengda Chemical Co., Ltd
p-Naphtholbenzein
$2.00 /1000kg
p-Naphtholbenzein CAS:145-50-6
career henan chemical co
α-Naphtholbenzein
$9.80 /1KG
α-Naphtholbenzein CAS:145-50-6
Henan Tianfu Chemical Co.,Ltd.
CONIER CHEM AND PHARMA LIMITED
Zhengzhou Alfa Chemical Co.,Ltd
Hefei TNJ Chemical Industry Co.,Ltd.
Dideu Industries Group Limited
Dayang Chem (Hangzhou) Co.,Ltd.
HANGZHOU LEAP CHEM CO., LTD.
PT CHEM GROUP LIMITED