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138-42-1
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Basic Information
CAS No.: 138-42-1
Name: 4-NITROBENZENESULFONIC ACID
Article Data: 74
Molecular Structure:
Molecular Structure of 138-42-1 (4-NITROBENZENESULFONIC ACID)
Formula: C6H5NO5S
Molecular Weight: 203.175
Synonyms: Benzenesulfonicacid, p-nitro- (6CI,7CI,8CI);4-Nitrophenylsulfonic acid;NSC 5376;p-Nitrobenzenesulfonic acid;p-Nitrophenylsulfonic acid;
EINECS: 205-329-5
Density: 1.637 g/cm3
Melting Point: 105-112 °C
Solubility: 476g/L(100.5 oC)
Appearance: beige to yellow-orange crystalline powder
Hazard Symbols: IrritantXi, CorrosiveC
Risk Codes: 36/37/38
Safety: 37/39-26
Transport Information: UN 2305
PSA: 108.57000
LogP: 2.44550
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Synthetic route
100-32-3

di(p-nitrophenyl) disulfide

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
With dihydrogen peroxide; methyltrioxorhenium(VII) In dichloromethane; acetonitrile at 20℃; for 1h;96%
With dihydrogen peroxide; trichlorophosphate In water at 80℃; for 1.08333h; Micellar solution;93%
With nitric acid
With nitric acid
78846-76-1

2-chloro-4-nitrobenzene sulfonic acid

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
With sodium hydroxide In ethanol at 42℃; for 1.25h; Temperature;93%
1849-36-1

para-nitrobenzenethiol

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
With dihydrogen peroxide; methyltrioxorhenium(VII) In chloroform; acetonitrile at 20℃;92%
With dihydrogen peroxide; trichlorophosphate In water at 80℃; for 1.16667h; Micellar solution;91%
98-74-8

4-Nitrobenzenesulfonyl chloride

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
Stage #1: 4-Nitrobenzenesulfonyl chloride With N-ethyl-N,N-diisopropylamine; Wang resin In dichloromethane at 22℃;
Stage #2: With trifluoroacetic acid In dichloromethane for 1h; Further stages.;		74%
With water In 1,4-dioxane at 29.9℃; Rate constant; Mechanism; Thermodynamic data; kinetics; other temperatures; ΔH(excit.), ΔS(excit.);
With water In 1,4-dioxane at 39.9℃; Rate constant;
6209-72-9

4-nitrobenzenesulfonyl peroxide

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
In chloroform for 168h; Ambient temperature;72%
With benzyl alcohol In ethyl acetate; benzene
98-95-3

nitrobenzene

138-42-1

p-nitrobenzenesulfonic acid

98-95-3

nitrobenzene

A

138-42-1

p-nitrobenzenesulfonic acid

B

98-47-5

3-Nitrobenzenesulfonic acid

Conditions
ConditionsYield
beim Sulfurieren;
98-11-3

benzenesulfonic acid

A

80-82-0

2-nitrobenzenesulfonic acid

B

138-42-1

p-nitrobenzenesulfonic acid

C

98-47-5

3-Nitrobenzenesulfonic acid

Conditions
ConditionsYield
With nitric acid
...Expand
121-57-3

4-aminobenzene sulfonic acid

138-42-1

p-nitrobenzenesulfonic acid

Conditions
ConditionsYield
With copper(I) oxide; nitric acid; sodium nitrite
With dihydrogen peroxide In acetic acid at 70 - 80℃; for 3.75h;
With Streptomyces thioluteus para-aminobenzoate N-oxygenase
110-91-8

morpholine

114466-93-2

C12H17N2O5S*H(1+)

A

138-42-1

p-nitrobenzenesulfonic acid

B

C6H12N*H(1+)

Conditions
ConditionsYield
In tetrahydrofuran; ethyl acetate at -10℃; Kinetics;
...Expand
Raw Materials
2393-23-9
100-46-9
100-00-5
7697-37-2
121-57-3
106-47-8
110-85-0
64-17-5
Downstream Products
1830-67-7
15481-55-7
6214-20-6
121-47-1
98-74-8
121-57-3
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Chemistry

Molecular Structure:

Molecular Formula: C6H5NO5S
Molecular Weight: 203.1726
IUPAC Name: 4-Nitrobenzenesulfonic acid
Synonyms of 4-Nitrobenzenesulfonic acid (CAS NO.138-42-1): 4-Nitrobenzenesulfonate ; CCRIS 3132 ; EINECS 205-329-5 ; NSC 5376 ; p-Nitrobenzenesulfonic acid ; p-Nitrophenylsulfonic acid ; Benzenesulfonic acid, 4-nitro- ; Benzenesulfonic acid, p-nitro- (8CI)
CAS NO: 138-42-1
Product Categories: Sulphur Derivatives
Melting point: 105-112 °C 
Index of Refraction: 1.612
Molar Refractivity: 43.13 cm3
Molar Volume: 124 cm3
Surface Tension: 68.8 dyne/cm
Density of 4-Nitrobenzenesulfonic acid (CAS NO.138-42-1): 1.637 g/cm3

Safety Profile

Hazard Codes of 4-Nitrobenzenesulfonic acid (CAS NO.138-42-1): IrritantXi,CorrosiveC
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 37/39-26 
S37/39: Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RIDADR: 2305
Hazard Note: Corrosive/Irritant