ChemicalBook > CAS DataBase List > NAPHTHOL YELLOW S

NAPHTHOL YELLOW S

Product Name: NAPHTHOL YELLOW S
CAS No.: 846-70-8
Chemical Name: NAPHTHOL YELLOW S
Synonyms: CI 10316;1307yellow;1422yellow;citronin A;zlutkysela1;CI NO 10316;paperyellowl;yellowlake71;yellowno.403;FD&CYELLOWNO1
CBNumber: CB7308633
Molecular Formula: C10H4N2Na2O8S
Formula Weight: 358.19
MOL File: 846-70-8.mol

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NAPHTHOL YELLOW S Property

Melting point:: >300℃
storage temp.: Room Temperature
solubility: Acetonitrile (Slightly), DMSO (Slightly)
Colour Index: 10316
form: powder
color: Light Yellow to Dark Yellow
Merck: 14,6393
BRN: 2708476
Stability:: Stable. Incompatible with strong oxidizing agents.
EPA Substance Registry System: C.I. Acid Yellow 1 (846-70-8)

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Safety

Hazard Codes: Xi,C,F
Risk Statements: 11-34
Safety Statements: 22-24/25-45-36/37/39-26-16
WGK Germany: 3
RTECS: QK1813000
Hazard Note: Irritant
TSCA: Yes
HS Code: 32129000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H317May cause an allergic skin reaction

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

P314Get medical advice/attention if you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 70540
Product name: Naphthol Yellow S
Packaging: 25g
Price: $29.95
Updated: 2025/07/31

Sigma-Aldrich

Product number: 49547
Product name: Naphthol Yellow S
Purity: analytical standard
Packaging: 25mg
Price: $173
Updated: 2025/07/31

TCI Chemical

Product number: F0100
Product name: Naphthol Yellow S Hydrate
Purity: >98.0%(HPLC)(T)
Packaging: 25g
Price: $111
Updated: 2025/07/31

Sigma-Aldrich

Product number: 70540
Product name: Naphthol Yellow S
Packaging: 100g
Price: $115
Updated: 2025/07/31

TRC

Product number: N369048
Product name: Naphthol Yellow S Hydrate
Packaging: 5g
Price: $75
Updated: 2021/12/16

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NAPHTHOL YELLOW S Chemical Properties,Usage,Production

Chemical Properties

light yellow powder

Uses

Naphthol Yellow S Hydrate is used in methods for dying of textiles.

Uses

Dye for wool, silk.

Definition

ChEBI: An organic sodium salt that is the disodium salt of 5,7-dinitro-8-hydroxynaphthalene-2-sulfonic acid.

Preparation

4-Hydroxynaphthalene-1,3,6-trisulfonic acid or 1-Naphthol-4,7-disulfonic acid?or 1-Naphthol-2,7-disulfonic acid?or more of the latter with the nitro compounds and nitric acid reaction.

Biological Activity

Naphthol yellow S (NYS) is used as a stain for protein basic groups. It is an acidic dye and forms a NYS-protein complex at acidic pH. Combination of feulgen and NYS provides DNA to protein ratio.

Properties and Applications

colourful green light yellow. Soluble in cold water and hot water yellow, in 0 ℃ when solubility of 8%, slightly soluble in alcohol. Meet strong sulfuric acid is green light yellow, diluted colored light become weak. Its water solution to join sodium hydroxide have floc; Join chloride-ferric chloride solution from yellow to become yellow light brown. Apply to wool, polyamide fiber dyeing, coloured paper colourful yellow, the heavy metal salt can be used for printing ink and rubber color. Can also be used for soap, drug, cosmetics, biological and leather dyeing.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain		Fading	Stain	Fading	Stain
ISO	1	1	5	3	1	5	1	1
AATCC	1	2	2	1	1	1	2	2

Purification Methods

It is a water-soluble greenish yellow powder. The free sulfonic acid can be recrystallised from dilute HCl (m 150o) or AcOH/EtOAc (m 148-149.5o). The disodium salt is then obtained by dissolving the acid in two equivalents of aqueous NaOH and evaporating to dryness and drying the residue in a vacuum desiccator. The sodium salt can be recrystallised from the minimum volume of H2O or from EtOH [Dermer & Dermer J Am Chem Soc 61 3302 1939]. [Beilstein 11 III 542.]

NAPHTHOL YELLOW S Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from NAPHTHOL YELLOW S manufacturers

Career Henan Chemical Co

Product: NAPHTHOL YELLOW S 846-70-8
Price: US $1.00/KG
Min. Order: 1KG
Purity: 95-99%
Supply Ability: 1ton
Release date: 2020-01-03

846-70-8, NAPHTHOL YELLOW SRelated Search:

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Naphthol Yellow S Hydrate

NAPTHOL YELLOW S

2,4-Dinitro-1-naphthol-7-sulfonic acid sodium salt, 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid sodium salt, Acid Yellow 1, Flavianic acid sodium salt

Sulfur yellow S

2,4-Dinitro-1-naphthol-7-sulfonic Acid Disodium Salt Disodium 2,4-Dinitro-1-naphthol-7-sulfonate Disodium 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonate 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic Acid Disodium Salt Flavianic Acid Disodium Salt Acid Yellow

Acid Yellow 1, Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate

8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid sodium salt

NAPHTHOL YELLOW

NAPHTHOL YELLOW S

NAPHTHOL YELLOW S SODIUM SALT

NAPHTHOL YELLOW SXX

NAPHTHALENE YELLOW

a.f.yellowno.1

acidleatheryellownys

c.i.acidyellow1

c.i.foodyellow1

dolkwalnaphtholyellows

edicolsuprayellowy

fdandcyellowno.1

hispacidyellownsf

japanyellow403-1

japanyellowno.403-1

javanaphtholyellows

kcanaphtholyellows

maplenaphtholyellows

nankainaphtholyellows

naphthollakeyellowfy

naphtholyellowl

naphtholyellowos

naphtholyellowpl

naphtholyellowrs

naphtholyellowsel12

naphtholyellowsfq

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paperyellowl

rakutonaphtholyellows

sodiumflavianate

solaryellowny

solaryellowny,sodiumsalt

solaryellownyconc

transparentyellowlake16091

yellowlake71

yellowno.403

zlutkysela1

zlutnaftolovas

1307yellow

1422yellow

2,4-Dinitro-1-naphthol-7-sulfo

2,4-DINITRO-ALPHA-NAPHTHOL-7-SULFONIC ACID, NA SALT

2,4-DINITRO-1-NAPHTHOL-7-SULFONIC ACID