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

1-(2-Pyridylazo)-2-naphthol

Uses
Product Name
1-(2-Pyridylazo)-2-naphthol
CAS No.
85-85-8
Chemical Name
1-(2-Pyridylazo)-2-naphthol
Synonyms
PAN;Hpan;O-PAN;USP52;PAN-2;FLJ39360;KIAA0710;PAN, Reagent;PAN INDICATOR;PanIndicatorGr
CBNumber
CB0322603
Molecular Formula
C15H11N3O
Formula Weight
249.27
MOL File
85-85-8.mol
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1-(2-Pyridylazo)-2-naphthol Property

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.
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)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
3
TSCA 
Yes
HS Code 
29333999
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
101036
Product name
1-(2-Pyridylazo)-2-naphthol
Purity
indicator grade
Packaging
25g
Price
$636
Updated
2024/03/01
Sigma-Aldrich
Product number
1.07531
Product name
1-(2-Pyridylazo)-2-naphthol (PAN)
Purity
metal indicator Reag. Ph Eur
Packaging
5G
Price
$211
Updated
2024/03/01
TCI Chemical
Product number
A5000
Product name
PAN [=1-(2-Pyridylazo)-2-naphthol][Metal indicator and spectrophotometric reagent for transition metals]
Purity
>98.0%(HPLC)(T)
Packaging
1g
Price
$28
Updated
2024/03/01
TCI Chemical
Product number
A5000
Product name
PAN [=1-(2-Pyridylazo)-2-naphthol][Metal indicator and spectrophotometric reagent for transition metals]
Purity
>98.0%(HPLC)(T)
Packaging
5g
Price
$79
Updated
2024/03/01
Alfa Aesar
Product number
A17475
Product name
1-(2-Pyridylazo)-2-naphthol, 98%
Packaging
1g
Price
$24.65
Updated
2024/03/01
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1-(2-Pyridylazo)-2-naphthol Chemical Properties,Usage,Production

Uses

1-(2-Pyridylazo)-2-naphthol is an indicator of transition metals. 1-(2-Pyridylazo)-2-naphthol is an indicator in complexometry and a reagent for the extraction and spectrophotometric determination of many transition metals. Dyes and metabolites.

Chemical Properties

orange crystals

Uses

1-(2-Pyridylazo)-2-naphthol is an indicator of transition metals. 1-(2-Pyridylazo)-2-naphthol is an indicator in complexometry and a reagent for the extraction and spectrophotometric determination of many transition metals. Dyes and metabolites.

Definition

ChEBI: 1-(2-pyridin-2-yldiazenyl)-2-naphthol is a member of naphthols.

General Description

1-(2-Pyridylazo)-2-naphthol (PAN), an orange colored dye, is commonly used as an acid-base indicator. It can form chelates with metal ions, which makes it a valuable indicator in complexometric titrations. PAN is also a spectrophotometric reagent, which can extract metal chelates into an organic solvent.

Agricultural Uses

1-(2-Pyridylazo)-2-naphthol is a hard stratum of strongly compacted soil caused by continual plowing to the same depth of hardened soil which has high clay content. The precipitated iron and silicates cement the soil particles and form pans. 1-(2-Pyridylazo)-2-naphthol often impede drainage and root growth. It can be broken up using a subsoiler .

Purification Methods

Purify PAN by repeated crystallisation from EtOH or MeOH. It can also be purified by sublimation under vacuum. Purity can be checked by TLC using a mixed solvent (pet ether/Et2O/EtOH; 10:10:1) on a silica gel plate. It has pK1 1.9 and pK2 12.2 in 20% aqueous ethoxyethanol. It chelates with copper [Pease & Williams Anal Chem 31 1046 1959]. [Beilstein 22 I 694, 22 III/IV 7073, 22/4 V 618.]

1-(2-Pyridylazo)-2-naphthol Preparation Products And Raw materials

Raw materials

Cyclohexane Carbon dioxide Sodium cyanide weak 3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarbonyl chloride 2-Aminopyridine Ethyl nitrite

Preparation Products

CARAMEL polyaniline composite film
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View Lastest Price from 1-(2-Pyridylazo)-2-naphthol manufacturers

Zhuozhou Wenxi import and Export Co., Ltd
Product
1-(2-Pyridylazo)-2-naphthol 85-85-8
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-08-11
Career Henan Chemical Co
Product
1-(2-Pyridylazo)-2-naphthol 85-85-8
Price
US $8.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10MT
Release date
2018-12-16

85-85-8, 1-(2-Pyridylazo)-2-naphtholRelated Search:

2-Hydroxypyridine Terbinafine Hydrochloride Sodium acetate 2,6-Lutidine 1,1'-Bi-2-naphthol 1-Naphthol 2-Naphthol Phenmedipham 2-(2-PYRIDYLAZO)-1-NAPHTHOL,2-(2-pyridylazo)-1-naphthol95+% 1-(3-pyridylazo)-2-naphthol ANTI-PIG TISSUE (PAN) ANTI-PAN-VERTEBRATE CONSERVED (HUMAN),MOUSE ANTI-MAMMAL CYTOKERATIN PAN MONOCLONAL ANTI-CYTOKERATIN, PAN,MONOCLONAL ANTI-PAN CYTOKERATIN ANTI-PAN SODIUM CHANNEL,ANTI-SODIUM CHANNEL (PAN) (SP19),ANTI-SODIUM CHANNEL (PAN),ANTI-SODIUM CHANNEL, VOLTAGE GATED, PAN [SP19],ANTI-SP19 PAN SODIUM CHANNEL ANTI-TGF-BETA PAN-SPECIFIC 1-(2-Pyridylazo)-2-naphthol BIOTINYLATED ANTI-MOUSE PAN-NK CELLS 1-(5-bromo-2-pyridylazo)-2-naphthol-6-sulfonic acid

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  • Na+ CP type &alpha
  • 1-(2-PYRIDYLAZO)-2-NAPHTHOL SOLUTION, 0.1%, In ETHYL ALCOHOL1-(2-PYRIDYLAZO)-2-NAPHTHOL SOLUTION, 0.1%, In ETHYL ALCOHOL1-(2-PYRIDYLAZO)-2-NAPHTHOL SOLUTION, 0.1%, In ETHYL ALCOHOL
  • 1-(2-PYRIDYLAZO)-2-NAPHTHOL, REAGENT (ACS)1-(2-PYRIDYLAZO)-2-NAPHTHOL, REAGENT (ACS)1-(2-PYRIDYLAZO)-2-NAPHTHOL, REAGENT (ACS)
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  • PAN,REAGENT,ACS
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  • PAN [=1-(2-Pyridylazo)-2-naphthol] [Metal indicator and spectrophotometric reagent for transition metals]
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  • TIMTEC-BB SBB009111
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  • PanIndicatorGr-(1-(2-Pyridylazo)-2-Naphthol)
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