2-Amino-5-chlorobenzenesulfonic acid
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2-Amino-5-chlorobenzenesulfonic acid
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CAS No:
133-74-4
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Formula:
C6H6ClNO3S
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Chemical Name:
2-Amino-5-chlorobenzenesulfonic acid
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Synonyms:
Benzenesulfonic acid,2-amino-5-chloro-;2-Amino-5-chlorobenzenesulfonic acid;p-Chloroaniline-o-sulfonic acid;4-Chloroaniline-2-sulfonic acid;1-Amino-4-chloro-2-benzenesulfonic acid;2-Amino-5-chlorobenzene-1-sulfonic acid
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CAS No:
2-Amino-5-chlorobenzenesulfonic acid Basic Attributes
207.63
207.63
205-119-3
DTXSID80157900
2921420090
Safety Information
III
6.1
UN 2660 6.1/PG 3
3
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . R33:Danger of cumulative effects. R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
S28-S36/37-S45-S61-S28A
XU8200000
T,N
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
H315
|Danger|H314 (12.5%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 9 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
2-Amino-5-chlorobenzenesulfonic acid Use and Manufacturing
It is obtained by sulfonation of p-chloroaniline: slowly drip 100% sulfuric acid into p-chloroaniline and the solvent diphenyl sulfone, and it reacts violently to produce 4-chloroaniline-2-sulfonic acid and water. When the water was distilled off, the reaction mixture turned into bright purple crystals. Continue heating for 7 hours under reduced pressure, cool the melt, heat water to dissolve, filter out the diphenyl sulfone in the solution, and cool to obtain white needle-like crystals. The finished product is obtained by filtering, washing and drying. The yield was 94%.
Used in organic synthesis intermediates.
Computed Properties
Molecular Weight:207.64
XLogP3:1.2
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:1
Exact Mass:206.9756919
Monoisotopic Mass:206.9756919
Topological Polar Surface Area:88.8
Heavy Atom Count:12
Complexity:248
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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2-Amino-5-chlorobenzenesulfonic acid
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