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
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)
Safety
- HS Code
- 29089990
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.
N-Bromosuccinimide Price
- Product number
- S563692
- Product name
- 4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID
- Purity
- Aldrich
- Packaging
- 250mg
- Price
- $179
- Updated
- 2024/03/01
- Product number
- FD37017
- Product name
- 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
- Packaging
- 10g
- Price
- $200
- Updated
- 2021/12/16
- Product number
- 134872
- Product name
- 4,5-Dihydroxynaphthalene-2,7-disulfonicacid
- Purity
- 95%+
- Packaging
- 2.500g
- Price
- $215
- Updated
- 2021/12/16
- Product number
- 134872
- Product name
- 4,5-Dihydroxynaphthalene-2,7-disulfonicacid
- Purity
- 95%+
- Packaging
- 5g
- Price
- $323
- Updated
- 2021/12/16
- 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
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
Preparation Products
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View Lastest Price from 1,8-Dihydroxynaphthylene-3,6-disulfonic acid manufacturers
- 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
- 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