1,8-Dihydroxynaphthylene-3,6-disulfonic acid

Product Name: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
CAS No.: 148-25-4
Chemical Name: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
Synonyms: CHROMOTROPIC ACID;CHROMOGEN;Aids000369;Aids-000369;Chrmotropicacid;chromotropicaci;Chromotopic acid;Chromotrophic Acid;TIMTEC-BB SBB001312;1,8-Dihydroxynaphthy
CBNumber: CB7196825
Molecular Formula: C10H8O8S2
Formula Weight: 320.3
MOL File: 148-25-4.mol

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1,8-Dihydroxynaphthylene-3,6-disulfonic acid Property

Boiling point:: 429.2°C (rough estimate)
Density: 1.7929 (rough estimate)
refractive index: 1.6000 (estimate)
storage temp.: Inert atmosphere,Room Temperature
pka: -0.51±0.40(Predicted)
CAS DataBase Reference: 148-25-4(CAS DataBase Reference)
EPA Substance Registry System: 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy- (148-25-4)

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Safety

HS Code: 29089990

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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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

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

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

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: S563692
Product name: 4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID
Purity: Aldrich
Packaging: 250mg
Price: $179
Updated: 2024/03/01

AK Scientific

Product number: J95965
Product name: 1,8-Dihydroxynaphthylene-3,6-disulfonicacid
Packaging: 1g
Price: $10
Updated: 2021/12/16

AK Scientific

Product number: J95965
Product name: 1,8-Dihydroxynaphthylene-3,6-disulfonicacid
Packaging: 5g
Price: $15
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD37017
Product name: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
Packaging: 1g
Price: $40
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD37017
Product name: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
Packaging: 2g
Price: $64
Updated: 2021/12/16

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1,8-Dihydroxynaphthylene-3,6-disulfonic acid Chemical Properties,Usage,Production

Chemical Properties

4,5-Dihydroxynaphthalene-2,7-disulfonic acid [148-25-4]. (1,8-dihydroxynaphthalene-3,6-disulfonic acid), chromotropic acid, C10H8O8S2, Mr 320.3: the disodium salt is readily soluble in water. Alkali fusion yields 1,3,8-trihydroxynaphthalene-6-sulfonic acid. Diazo coupling occurs in the 3- and 6-positions.

Uses

Chromotropic acid is used as an analytical reagent and as a coupling component for a wide range of azo dyes, e.g., C.I. Acid Violet 6, C. I. Mordant Blue 13, and C.I. Direct Blue 84.

Definition

ChEBI: A naphthalenesulfonic acid that is naphthalene-2,7-disulfonic acid substituted by hydroxy groups at positions 4 and 5.

Production Methods

2-Hydroxynaphthalene-3,6,8- trisulfonic acid total liquor is concentrated and heated with caustic soda liquor to 158℃ for 20 – 30 h . The melt is diluted with water and poured into excess hydrochloric acid. Salt is added, sulfur dioxide expelled, and the mixture cooled to precipitate the product as the disodium salt in 88 % yield.
An alternative process is based on direct fusion (caustic liquor at 228℃ under pressure) of 1-aminonaphthalene-3,6,8-trisulfonic acid to chromotropic acid without isolating the intermediate oxy Koch acid.

1,8-Dihydroxynaphthylene-3,6-disulfonic acid Preparation Products And Raw materials

Raw materials

gray Naphthalene-2,7-disulfonic acid Koch acid

Preparation Products

Mordant Blue 13 CHROMOTROPE 2R ARSENAZO III

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View Lastest Price from 1,8-Dihydroxynaphthylene-3,6-disulfonic acid manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd

Product: Chromotropic Acid 148-25-4
Price: US $180.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-06-06

WUHAN FORTUNA CHEMICAL CO., LTD

Product: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid 148-25-4
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-01-16

Career Henan Chemical Co

Product: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid 148-25-4
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 100kg
Release date: 2019-07-09

148-25-4, 1,8-Dihydroxynaphthylene-3,6-disulfonic acidRelated Search:

CHROMOTROPIC ACID SODIUM SALT Triclosan Sodium xylenesulfonate Sodium diphenylamine-4-sulfonate 1-Naphthalenesulfonic acid Sodium 1-naphthalenesulfonate 1,8-Naphthalenediol CHROMOTROPIC ACID DISODIUM SALT ARSENAZO III DISODIUM SALT ARSENAZO I CARBOXYARSENAZO III CHLOROPHOSPHONAZO III CHROMOTROPE 2R SPADNS BERYLLON II SULFONAZO III, TITRATION INDICATOR FOR S O4 ACID RED 60 CALCICHROME

4,5-dihydroxy-7-naphthalenedisulfonicacid

7-Naphthalenedisulfonicacid,4,5-dihydroxy-2

Chrmotropicacid

8-Dihydroxynaphthylene-3

4,5-Dihydroxy-2,7-naphthalene disulfonic acid 1,8-Dihydroxynaph-thalene-3,6-disulfonic acid

4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID

4,5-dihydroxynaphthalene-2,7-disulphonic acid

1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID

1,8-DIHYDROXYNAPHTHYLENE-3,6-DISULFONIC ACID

CHROMOGEN

CHROMOTROPIC ACID

TIMTEC-BB SBB001312

4,5-dihydroxynaphthalene-2,7-disulfonic acid

Chromotopic acid

2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-

1,8-Dihydroxynaphthy

Aids000369

Aids-000369

CHROMOTROPIC ACID(1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID)

Chromotropic acid, AR

Chromotropic acid, ACS,99%

chromotropicaci

4,5-Dihydroxynaphthalene-2,7-disulfonic Acid DISCONTINUED. Please see D494918

Chromotrophic Acid

148-25-4

C10H4SO3H2OH2

C10H4OH2SO3H2

C10H8O8S2

Intermediates of Dyes and Pigments