3,4-Diaminobenzenesulfonic acid
- Product Name
- 3,4-Diaminobenzenesulfonic acid
- CAS No.
- 7474-78-4
- Chemical Name
- 3,4-Diaminobenzenesulfonic acid
- Synonyms
- DBS;DIBUTYL DECANEDIOATE;MCF2L;ARHGEF14;FEMA 2373;BUTYL SEBACATE;JACS-7474-78-4;Orthaminic acid;N-BUTYL SEBACATE;DI-N-BUTYL SEBACATE
- CBNumber
- CB9312890
- Molecular Formula
- C6H8N2O3S
- Formula Weight
- 188.2
- MOL File
- 7474-78-4.mol
3,4-Diaminobenzenesulfonic acid Property
- Melting point:
- -12 °C
- Boiling point:
- 178-179 °C3 mm Hg(lit.)
- Density
- 0.936 g/mL at 25 °C(lit.)
- refractive index
- n20/D 1.441(lit.)
- Flash point:
- >230 °F
- storage temp.
- Keep in dark place,Sealed in dry,Room Temperature
- solubility
- hexane, toluene, ethanol and acetone: soluble
- pka
- -0.52±0.50(Predicted)
- form
- Solid
- color
- Dark Brown
- Dielectric constant
- 4.5（30℃）
- InChI
- InChI=1S/C6H8N2O3S/c7-5-2-1-4(3-6(5)8)12(9,10)11/h1-3H,7-8H2,(H,9,10,11)
- InChIKey
- FKSRSWQTEJTBMI-UHFFFAOYSA-N
- SMILES
- C1(S(O)(=O)=O)=CC=C(N)C(N)=C1
- CAS DataBase Reference
- 7474-78-4(CAS DataBase Reference)
- EPA Substance Registry System
- Benzenesulfonic acid, 3,4-diamino- (7474-78-4)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- D415015
- Product name
- 3,4-DiaminobenzenesulfonicAcid
- Packaging
- 250mg
- Price
- $80
- Updated
- 2021/12/16
- Product number
- D415015
- Product name
- 3,4-DiaminobenzenesulfonicAcid
- Packaging
- 50mg
- Price
- $50
- Updated
- 2021/12/16
- Product number
- FD133281
- Product name
- 3,4-Diaminobenzenesulfonic acid
- Packaging
- 500mg
- Price
- $75
- Updated
- 2021/12/16
- Product number
- 157229
- Product name
- 3,4-Diaminobenzenesulfonic acid
- Packaging
- 500mg
- Price
- $120
- Updated
- 2021/12/16
- Product number
- FD133281
- Product name
- 3,4-Diaminobenzenesulfonic acid
- Packaging
- 1g
- Price
- $128
- Updated
- 2021/12/16
3,4-Diaminobenzenesulfonic acid Chemical Properties,Usage,Production
Uses
3,4-Diaminobenzenesulfonic Acid is a useful organic synthetic reagent and a sulfonate-aminium zwitterion.
Synthesis
95-54-5
7474-78-4
The general procedure for the synthesis of 3,4-diaminobenzenesulfonic acid from o-phenylenediamine was as follows: first, the sulfonation mixture was prepared by dissolving 160 g (1.48 mol) of 1,2-diaminobenzene in 800 g (435 mL; 8.16 mol) of 95-97% sulfuric acid. Subsequently, the sulfonated mixture was divided into four portions and pumped into a continuous flow microreactor for the reaction. The microreactor consisted of a sequentially connected inlet module, five residence modules and an outlet module, each of which was maintained at a constant reaction temperature. Upon completion of the reaction, the sulfonation mixture was rapidly cooled with water at the reactor outlet to allow the sulfonation reaction products to precipitate in an ice-water bath. After filtration, the resulting white product was characterized by nuclear magnetic resonance (NMR). Based on 1H-NMR spectroscopy (400 MHz, DMSO-d6) analysis, no isomers were detected in all the products isolated in the experiments, confirming the formation of 3,4-diaminobenzenesulfonic acid and the absence of impurities. The yields of the products were influenced by the reaction temperature and residence time: 80% at 160 °C reaction temperature for 25 min, 89%, 90% and 100% at 180 °C reaction temperature for 5, 10 and 25 min, respectively.
References
[1] Patent: WO2012/74822, 2012, A1. Location in patent: Page/Page column 19-20
[2] Patent: EP2457886, 2012, A1. Location in patent: Page/Page column 9
[3] Patent: EP1400507, 2004, A1. Location in patent: Page 4; 5
[4] Tetrahedron, 2008, vol. 64, # 22, p. 5410 - 5415
[5] Patent: US2012/225863, 2012, A1. Location in patent: Page/Page column 40
3,4-Diaminobenzenesulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 3,4-Diaminobenzenesulfonic acid manufacturers
- Product
- 3,4-Diaminobenzenesulfonic acid 7474-78-4
- Price
- US $5.00-0.20/KG
- Min. Order
- 1KG
- Purity
- 98%
- Supply Ability
- g-kg-tons, free sample is available
- Release date
- 2024-03-26
- Product
- 3,4-Diaminobenzenesulfonic acid 7474-78-4
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99.0%+
- Supply Ability
- 100 tons
- Release date
- 2019-12-30
- Product
- 3,4-Diaminobenzenesulfonic acid 7474-78-4
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 100KG
- Release date
- 2018-12-18