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ChemicalBook >> CAS DataBase List >>1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Structure
1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt structure
CAS No.
525-05-3
Chemical Name:
1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt
Synonyms
nitrosor;Nitroso R Sa;NITROSO-R-SALT;1-nitroso-r-salt;Nitroso-R-SaltGr;Nitroso red salt;Nitroso-RSalt>95%;NITROSO-R-SALT AR;1-Nitro-2-naphthol-3;Nitroso-Rsalt,tech.85%
CBNumber:
CB2101095
Molecular Formula:
C10H8NNaO8S2
Molecular Weight:
357.28
MDL Number:
MFCD00003885
MOL File:
525-05-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:50:09
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1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Properties

Melting point >300 °C(lit.)
solubility Slightly soluble in methanol and ethanol.
form Crystalline Powder
color Yellow to orange
Water Solubility almost transparency
Merck 14,6644
BRN 3643930
InChI InChI=1S/C10H7NO8S2.Na.H/c12-10-8(21(17,18)19)4-5-3-6(20(14,15)16)1-2-7(5)9(10)11-13;;/h1-4,12H,(H,14,15,16)(H,17,18,19);;
InChIKey YSJIUHZRNBXDKS-UHFFFAOYSA-N
SMILES N(C1=C(C(S(O)(=O)=O)=CC2=CC(S(O)(=O)=O)=CC=C12)O)=O.[NaH]
CAS DataBase Reference 525-05-3(CAS DataBase Reference)
FDA UNII 8197875CWH
EPA Substance Registry System 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-nitroso-, disodium salt (525-05-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302+H312+H332-H315-H319-H335
Precautionary statements  P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P501-P280a-P304+P340-P305+P351+P338-P405-P501a
Hazard Codes  Xn
Risk Statements  20/21/22
Safety Statements  22-24/25
WGK Germany  3
RTECS  QJ6480000
TSCA  TSCA listed
HS Code  29089990
NFPA 704
1
2 0

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt price More Price(30)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical N0268 Disodium 1-Nitroso-2-naphthol-3,6-disulfonate Monohydrate >98.0%(T) 525-05-3 25g $45 2026-04-30 Buy
TCI Chemical N0268 Disodium 1-Nitroso-2-naphthol-3,6-disulfonate Monohydrate >98.0%(T) 525-05-3 500g $532 2026-04-30 Buy
Biosynth AAA52505 Disodium 1-Nitroso-2-naphthol-3,6-disulfonate Monohydrate 525-05-3 500g $900 2026-06-04 Buy
Biosynth AAA52505 Disodium 1-Nitroso-2-naphthol-3,6-disulfonate Monohydrate 525-05-3 250g $900 2026-06-04 Buy
honeywell 73950 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt 525-05-3 25g|GlassBottle $86.47 2026-06-04 Buy
Product number Packaging Price Buy
N0268 25g $45 Buy
N0268 500g $532 Buy
AAA52505 500g $900 Buy
AAA52505 250g $900 Buy
73950 25g|GlassBottle $86.47 Buy

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Chemical Properties, Uses, Production

Chemical Properties

YELLOWISH-ORANGE TO YELLOW-BROWN CRYST. POWDER

Uses

As a reagent for cobalt and potassium.

Uses

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt is the most sensitive determination of trace cobalt reagents used for determination of cobalt and potassium-sensitive reagents.

Purification Methods

Purify the salt by dissolution in aqueous alkali and precipitation by addition of HCl. The pKa is 7.13. [Oka & Miyamoto J Chem Soc Jpn (Pure Chem Sectn) 76 672 1955 (Chem Abstr 11882 1956I), Beilstein 11 IV 669.]

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Preparation Products And Raw materials

Raw materials

Sodium nitrite

Preparation Products

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Suppliers

Global Suppliers ( 256)
Supplier Tel Email Country ProdList Advantage
Shenyang Delier Biotechnology Co., Ltd. 15942301471 15942301471 15942301471@163.cn China 114 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Beijing HwrkChemical Technology Co., Ltd 89508211 18501085097 sales.bj@hwrkchemical.com China 9407 55
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Sichuan Kulinan Technology Co., Ltd 400-1166-196 18981987031 cdhxsj@163.com China 11674 57
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 452520369 sales@maya-r.com China 11693 57
Supplier Advantage
Shenyang Delier Biotechnology Co., Ltd. 58
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
Alfa Aesar 84
TCI (Shanghai) Development Co., Ltd. 81
Beijing HwrkChemical Technology Co., Ltd 55
Energy Chemical 61
Sichuan Kulinan Technology Co., Ltd 57
Tianjin heowns Biochemical Technology Co., Ltd. 57
Maya High Purity Chemicals 57

View Latest Price from 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT pictures 2026-03-20 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT
525-05-3
 1KG 99% 20 mt Hebei Chuanghai Biotechnology Co., Ltd
3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt pictures 2020-02-26 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt
525-05-3
 1KG 98%+ 100 tons Shaanxi Dideu Medichem Co. Ltd
nitroso-R salt pictures 2019-07-06 nitroso-R salt
525-05-3
 $1.00 1kg 95%-99% 1000kg Career Henan Chemical Co

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt Spectrum

1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT(525-05-3)IR11-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT(525-05-3)IR2

525-05-3 (1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt) Related Search:

Cupric acetate monohydrate Ethylenediaminetetraacetic acid Potassium hydroxide 1-Propanol Carvacrol
Chromotropic acid disodium salt dihydrate Nitro red 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt hydrate 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt
3-Hydroxynaphthalene-2,7-disulphonic acid 2-Naphthol Disodium 2-naphthol-3,6-disulfonate 1-Nitroso-2-naphthol

1of3

LABOTEST-BB LT00454615 DISODIUM 1-NITROSO-2-NAPHTHOL-3,6-DISULFONATE DISODIUM 3-HYDROXY-4-NITROSO-2,7-NAPHTHALENEDISULFONATE NITROSO R SALTNITROSO R SALTNITROSO R SALT 3-HYDROXY-4-NITROSO-2,7-NAPHTHALENEDISULFONIC ACID DISODIUM SALT 1-Nitroso-2-naphthol-3,6-disul 1-Nitroso-2-naphthol-3,6-disulfonicacidsodiumsalt 2-HYDROXY-1-NITROSO-3,6-NAPHTHALENEDISULFONIC ACID DISODIUM SALT NITROSO-R-SALT 2,7-Naphthalenedisulfonicacid,3-hydroxy-4-nitroso-,disodiumsalt Nitroso-Rsalt,tech.85% 1-Nitroso-2-hydroxynaphthalene-3,6-disulfonic acid, sodium salt 1-Nitroso-2-naphthol-3,6-disulfonic acid, disodium salt hydrate, indicator grade, pure 1-nitroso-r-salt 1-nitroso-3,6-disulfonate Nitroso-R salt, tech. 85% 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt, Nitroso-R salt 1-Nitroso-2-naphthol-3,6-disulfonic acid hydrate disodium salt Nitroso-R salt, Nitroso-R-salt, 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt 3-Hydroxy-4-nitrosonaphthalene-2,7-bis(sulfonic acid sodium) salt 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt, 90+% 1-Nitroso-2-naphthol-3,6-disulfonic acid, disodium salt hydrate,98% 1-Nitroso-2-naphthol-3,6-disulfonic acid, disodium salt hydrate,pure,indicator grade 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt,95%,pract. 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt Disodium 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonate 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid sodium salt 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT HYDRATE INDICATOR GADE DisodiuM 1-Nitroso-2-naphthol-3,6-disulfonate  7-naphthalenedisulfonicacid,3-hydroxy-4-nitroso-disodiumsalt nitrosor disodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulphonate Nitroso-RSalt>95% Hydroxy-4-Nitroso-2,7NaphthalenedisulfonicAcidSodiumSalt-Nitroso-R-Salt Nitroso-R-SaltGr Disodium 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonate 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic Acid Disodium Salt 1-Nitroso-2-naphthol-3,6-disulfonic Acid Disodium Salt Nitroso R Salt 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodiuM salt, for analysis SodiuM 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate Nitroso red salt 1-Nitroso-2-naphthol-3 1-Nitro-2-naphthol-3,6—disulfonic acid disodium salt Nitroso R Sa Disodium1-Nitroso-2-naphthol-3,6-disulfonateMonohydrate> 3-Hydroxy-4-nitroso-2,7-naphthaL fonic acid disodium saL Nitroso R-Salt extrapure AR NITROSO-R-SALT AR Disodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid sodium salt (1:2) Disodium 1-nitroso-2-phthol-3,6-disulfote 1-Nitro-2-naphthol-3 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonic acid, sodium salt 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt 525-05-3 C10H5NNa2O8S2H2O C10H5NNa2O8S2 C10H5NNa2O8S2xH2O HOC10H4NOSO3Na2