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ChemicalBook >> CAS DataBase List >> 1-(2-Pyridylazo)-2-naphthol

1-(2-Pyridylazo)-2-naphthol

1-(2-Pyridylazo)-2-naphthol price.
  • $8 - $2244
  • Product name: 1-(2-Pyridylazo)-2-naphthol
  • CAS: 85-85-8
  • MF: C15H11N3O
  • MW: 249.27
  • EINECS:201-637-9
  • MDL Number:MFCD00004071
  • Synonyms:1-(2-Pyridylazo)-2-Hydroxynaphthalene;O-PAN;1-(2-Pyridylazo)-2-n;1-(2-Pyridylazo)-2-naphthol 99%;1-[(E)-2-Pyridinyldiazenyl]-2-naphthol;2-Hydroxy-1-(2-pyridylazo)naphthalene;2-Naphthol, 1-(2-pyridylazo)-;Pyridylazonaphthol
54 prices
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  • aablocks
  • Adipogen Life Sciences
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  • Manufactureraablocks
  • Product numberAA00IDF8
  • Product description1-(2-Pyridylazo)-2-naphthol 98%
  • Packaging500g
  • Price$296
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00IDF8
  • Product description1-(2-Pyridylazo)-2-naphthol 98%
  • Packaging100g
  • Price$79
  • Updated2026-05-29
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  • Manufactureraablocks
  • Product numberAA00IDF8
  • Product description1-(2-Pyridylazo)-2-naphthol ≥90%
  • Packaging25g
  • Price$20
  • Updated2026-05-29
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  • Manufactureraablocks
  • Product numberAA00IDF8
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging5g
  • Price$8
  • Updated2026-05-29
  • Buy
  • ManufacturerAdipogen Life Sciences
  • Product numberCDX-P0720-G025
  • Product description1-(2-Pyridylazo)-2-naphthol ≥99%(UV)
  • Packaging25g
  • Price$656
  • Updated2026-05-06
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  • ManufacturerAdipogen Life Sciences
  • Product numberCDX-P0720-G005
  • Product description1-(2-Pyridylazo)-2-naphthol ≥99%(UV)
  • Packaging5g
  • Price$156
  • Updated2026-05-06
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  • ManufacturerAHH
  • Product numberMT-21991
  • Product description1-(2-Pyridylazo)-2-naphthol 97%
  • Packaging100g
  • Price$380
  • Updated2026-05-25
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  • ManufacturerAHH
  • Product numberMT-21991
  • Product description1-(2-Pyridylazo)-2-naphthol 97%
  • Packaging100g
  • Price$380
  • Updated2026-05-26
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  • ManufacturerAK Scientific
  • Product numberX6820
  • Product description1-(2-Pyridylazo)-2-Naphthol
  • Packaging1g
  • Price$93
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging100g
  • Price$93
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging5g
  • Price$11
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging25g
  • Price$30
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging500g
  • Price$275
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0016676
  • Product description1-(2-PYRIDYLAZO)-2-NAPHTHOL 95.00%
  • Packaging5G
  • Price$856.39
  • Updated2021-12-16
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  • ManufacturerArctom
  • Product numberBD-A402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging5g
  • Price$9
  • Updated2026-05-25
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  • ManufacturerArctom
  • Product numberBD-A402444
  • Product description1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC)
  • Packaging5g
  • Price$9
  • Updated2026-05-26
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00IDF8 1-(2-Pyridylazo)-2-naphthol 98% 500g $296 2026-05-29 Buy
aablocks AA00IDF8 1-(2-Pyridylazo)-2-naphthol 98% 100g $79 2026-05-29 Buy
aablocks AA00IDF8 1-(2-Pyridylazo)-2-naphthol ≥90% 25g $20 2026-05-29 Buy
aablocks AA00IDF8 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 5g $8 2026-05-29 Buy
Adipogen Life Sciences CDX-P0720-G025 1-(2-Pyridylazo)-2-naphthol ≥99%(UV) 25g $656 2026-05-06 Buy
Adipogen Life Sciences CDX-P0720-G005 1-(2-Pyridylazo)-2-naphthol ≥99%(UV) 5g $156 2026-05-06 Buy
AHH MT-21991 1-(2-Pyridylazo)-2-naphthol 97% 100g $380 2026-05-25 Buy
AHH MT-21991 1-(2-Pyridylazo)-2-naphthol 97% 100g $380 2026-05-26 Buy
AK Scientific X6820 1-(2-Pyridylazo)-2-Naphthol 1g $93 2021-12-16 Buy
Ambeed A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 100g $93 2021-12-16 Buy
Ambeed A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 5g $11 2021-12-16 Buy
Ambeed A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 25g $30 2021-12-16 Buy
Ambeed A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 500g $275 2021-12-16 Buy
American Custom Chemicals Corporation CHM0016676 1-(2-PYRIDYLAZO)-2-NAPHTHOL 95.00% 5G $856.39 2021-12-16 Buy
Arctom BD-A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 5g $9 2026-05-25 Buy
Arctom BD-A402444 1-(2-Pyridylazo)-2-naphthol AR,90%(HPLC) 5g $9 2026-05-26 Buy

Properties

Melting point :138-141 °C (lit.)
Boiling point :392.37°C (rough estimate)
Density :1.1469 (rough estimate)
bulk density :190kg/m3
refractive index :1.5700 (estimate)
storage temp. :Store at +5°C to +30°C.
pka :8.86±0.50(Predicted)
form :Powder/Solid
color :green to red, upon chelation with metal
Water Solubility :Insoluble
λmax :461-465 nm in ethanol
ε(extinction coefficient) :≥15000 at 462-468nm in methanol at 0.01g/L
>35,000 at 222-228nm in methanol at 0.01g/L
>9,000 at 300-306nm in methanol at 0.01g/L BRN :206390
Stability :Stable. Incompatible with strong oxidizing agents, strong bases.
InChI :1S/C15H11N3O/c19-13-9-8-11-5-1-2-6-12(11)15(13)18-17-14-7-3-4-10-16-14/h1-10H,(H,16,17)/b18-15-
InChIKey :RAXUMGMWXZYADR-SDXDJHTJSA-N
SMILES :N(\N=C2\c3c(cccc3)C=CC\2=O)c1ncccc1
CAS DataBase Reference :85-85-8(CAS DataBase Reference)
NIST Chemistry Reference :2-Naphthalenol, 1-(2-pyridinylazo)-(85-85-8)
EPA Substance Registry System :2-Naphthalenol, 1-(2-pyridinylazo)- (85-85-8)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
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 P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
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

1-(2-Pyridylazo)-2-naphthol is widely used as an indicator for complexometry. It is used as a reagent for the extraction and spectrophotometric determination (for colorimetric analysis) of many transition metal elements like arsenic, chromium, cobalt, copper, cadmium, manganese, zinc and zirconium. It is also used for the analysis of uranium and thorium in solutions.

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