ChemicalBook > CAS DataBase List > CHROMOTROPE 2B

CHROMOTROPE 2B

Product Name: CHROMOTROPE 2B
CAS No.: 548-80-1
Chemical Name: CHROMOTROPE 2B
Synonyms: CI 16575;CI NO 16575;CHROMOTROPE;Coloring 2B;ACID RED 176;B,ChroMotrope;CHROMOTROPE 2B;CHROMOTROP 2 B;Chromogenic 2B;C.I.Acid Red 176
CBNumber: CB7738401
Molecular Formula: C16H12N3NaO10S2
Formula Weight: 493.39
MOL File: 548-80-1.mol

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CHROMOTROPE 2B Property

Melting point:: 300 °C
storage temp.: room temp
Colour Index: 16575
form: Crystalline Powder
color: Dark green to dark purple
Water Solubility: water: 10mg/mL
ε(extinction coefficient): ≥500 at 509-519nm in water
Merck: 14,2240
BRN: 4109733
CAS DataBase Reference: 548-80-1(CAS DataBase Reference)
EPA Substance Registry System: 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt (548-80-1)

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 26-36
WGK Germany: 3
TSCA: Yes

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 27130
Product name: Chromotrope 2B
Purity: for microscopy
Packaging: 10g
Price: $33.4
Updated: 2025/07/31

TRC

Product number: C433120
Product name: Chromotrope 2B
Packaging: 2.5g
Price: $75
Updated: 2021/12/16

Usbiological

Product number: 236886
Product name: Chromotrope 2B
Packaging: 25g
Price: $177
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC52646
Product name: Chromotrope 2B
Packaging: 25g
Price: $65
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC52646
Product name: Chromotrope 2B
Packaging: 50g
Price: $100
Updated: 2021/12/16

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CHROMOTROPE 2B Chemical Properties,Usage,Production

Chemical Properties

dark green to dark purple crystalline powder

Uses

Chromotrope 2B is a chromotropic acid azo dye and a groundwater pollutant removed from the environment via photoelectrochemical mineralization.

Uses

As a dye; as a reagent for boric acid or borates.

Preparation

4-Nitrobenzenamine diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid?coupling.

Properties and Applications

blue-ray red. Soluble in water for yellow light red, not soluble in alcohol. The strong sulfuric acid for dark purple, diluted into yellow light red solution. In water solution to join hydrochloric acid solution to become yellow, add sodium hydroxide for blue-ray red.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain	Persperation Fastness	Fading	Stain	Fading	Stain
ISO	6-7	4		4			4-5

CHROMOTROPE 2B Preparation Products And Raw materials

Raw materials

N-Methyl-4-nitroaniline CHROMOTROPIC ACID SODIUM SALT

Preparation Products

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View Lastest Price from CHROMOTROPE 2B manufacturers

Career Henan Chemical Co

Product: CHROMOTROPE 2B 548-80-1
Price: US $1.00/KG
Min. Order: 1KG
Purity: 98%
Supply Ability: 1kg，5kg，100kg
Release date: 2019-07-10

548-80-1, CHROMOTROPE 2BRelated Search:

CHROMOTROPE 2B 6-Amino-4-hydroxy-2-naphthalenesulfonic acid 6-Amino-2-naphthalenesulfonic acid 1,8-Dihydroxynaphthylene-3,6-disulfonic acid CHROMOTROPE 2R,Chromotrope2R,94%,Chromotrope 2R, pure,Chromotrope N-2R 3-Hydroxythiophenol 2,7-Naphthalenedisulfonic acid disodium salt 1-Naphthol 3-AMINO-5-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID MONOSODIUM SALT 2-Naphthylamine 8-Hydroxy-2-naphthylamine-3,6-disulfonic acid 4-NITROAZOBENZENE TECH. 90 Disodium 3-aminonaphthalene-2,7-disulphonate 1-Naphthol-3,6-disulfonic acid disodium salt Naphthalene-2,7-disulfonic acid Naphthalene-2-sulfonic acid 1-Naphthol-3,6-disulfonic acid CHROMOTROPIC ACID SODIUM SALT

2,7-Naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo-]-,disodiumsalt

7-naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo]-disodium

AcidRed176(16575)

Chromotropicacid2B

C.I.Acid Red 176

C.I.Mordant Black 93

Chromotrope Red 4B

Sodium 2-(p-nitrophenylazo)chromotropate

4,5-Dihydroxy-3-(p-nitrophenylazo)-2,7-naphthalenedisulfonic Acid Disodium Salt Acid Red 176

B,ChroMotrope

disodium 5-hydroxy-3-[(4-nitrophenyl)hydrazinylidene]-4-oxonaphthalene-2,7-disulfonate

disodium,(3E)-5-hydroxy-3-[(4-nitrophenyl)hydrazinylidene]-4-oxonaphthalene-2,7-disulfonate

ACID RED 176

4-(P-NITROPHENYLAZO)CHROMOTROPIC ACID SODIUM SALT

4,5-DIHYDROXY-3-(P-NITROPHENYLAZO)-2,7-NAPHTHALENEDISULFONIC

4,5-DIHYDROXY-3-(P-NITROPHENYLAZO)-2,7-NAPHTHALENEDISULFONIC ACID DISODIUM SALT

DISODIUM 4 5-DIHYDROXY-3-(P-NITROPHENYLAZO)-2 7-NAPHTHALENEDISULFONATE

CI NO 16575

CHROMOTROPE 2B

CHROMOTROPE

CHROMOTROP 2 B

CI 16575

P-NITROBENZENEAZOCHROMOTROPIC ACID SODIUM SALT

2-(4-NITROPHENYLAZO)CHROMOTROPIC ACID DISODIUM SALT

Acid Red 176~C.I. 16575

disodium 4,5-dihydroxy-3-(p-nitrophenylazo)naphthalene-2,7-disulphonate

CHROMOTROPE 2B (C.I. No 16575 )

Chromotrope2B,97%

Chromotrope 2B, pure

2-(4-Nitrophenylazo)chromotropic acid disodium salt, Acid Red 176

C.I.Acid Red 176:C.I.16575

C.I.Mordant Black 93:C.I.16575

Mordant Black 93

Coloring 2B

Chromogenic 2B

Chromotrope 2B, 10 mM in DMSO

548-80-1

540-80-1

C16H9N3NaO10S2

C16H9N3Na2O10S2

C16H9N3O10S22Na

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