ChemicalBook > CAS DataBase List > 1,8-Dihydroxynaphthylene-3,6-disulfonic acid

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
Biosynth Carbosynth
Product number
FD37017
Product name
1,8-Dihydroxynaphthylene-3,6-disulfonic acid
Packaging
10g
Price
$200
Updated
2021/12/16
Matrix Scientific
Product number
134872
Product name
4,5-Dihydroxynaphthalene-2,7-disulfonicacid
Purity
95%+
Packaging
2.500g
Price
$215
Updated
2021/12/16
Matrix Scientific
Product number
134872
Product name
4,5-Dihydroxynaphthalene-2,7-disulfonicacid
Purity
95%+
Packaging
5g
Price
$323
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0164809
Product name
1,8-DIHYDROXYNAPHTHYLENE-3,6-DISULFONIC ACID
Purity
95.00%
Packaging
0.5G
Price
$1072.5
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

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