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503-40-2

Basic Information
CAS No.: 503-40-2
Name: Methanedisulphonic acid
Article Data: 60
Molecular Structure:
Molecular Structure of 503-40-2 (Methanedisulphonic acid)
Formula: CH4O6S2
Molecular Weight: 176.171
Synonyms: Methionicacid;Methanedisulfonic acid;
EINECS: 207-966-4
Density: 2.145 g/cm3
Melting Point: 107-109oC
Boiling Point: 263℃ at 101.3kPa
Solubility: 2458g/L(25 oC)
Appearance: white powder
PSA: 125.50000
LogP: 0.88110
Synthetic route
75-09-2

dichloromethane

calcium methanedisulfonate

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
Stage #1: dichloromethane With calcium sulfite In water at 180℃; for 10h; Autoclave;
Stage #2: calcium methanedisulfonate With sulfuric acid In water at 80℃; for 2h; Reagent/catalyst; Temperature;
89%
74-95-3

1,2-dibromomethane

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
Stage #1: 1,2-dibromomethane With potassium sulfite; tetrabutylammomium bromide; potassium iodide In water at 80 - 90℃; for 88h;
Stage #2: With hydrogenchloride In water at 90℃; for 2h;
Stage #3: With barium(II) chloride In water at 20 - 90℃; for 2h;
84.7%
18555-26-5

methylene trithiocarbonate

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With nitric acid
60-35-5

acetamide

123-43-3

sulfoacetic acid

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfuric acid
60-35-5

acetamide

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide bis zum Entweichen von schwefliger Saeure;
With sulfuric acid; sulfur trioxide at 210℃;
849585-22-4

LACTIC ACID

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide bis zur Entwicklung von schwefliger Saeure, dann Saettigen mit BaCO3;
With sulfuric acid; sulfur trioxide
64-67-5

diethyl sulfate

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfur trioxide
75-75-2

methanesulfonic acid

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfur trioxide at 140℃;
With aminosulfonic acid at 25 - 150℃; for 3h; Reagent/catalyst; Temperature;
60-29-7

diethyl ether

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With sulfur trioxide
75-47-8

iodoform

503-40-2

methanedisulfonic acid

Conditions
ConditionsYield
With potassium sulfite at 150℃;
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    Methanedisulfonic acid

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  • High quality Methanedisulphonic acid cas NO.: 503-40-2

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Chemistry

Molecular Structure of Methanedisulfonic acid (CAS NO.503-40-2):

Molecular Formula: CH4O6S2
Molecular Weight: 176.1689
IUPAC Name: Methanedisulfonic acid
Synonyms of Methanedisulfonic acid (CAS NO.503-40-2): Methionic acid ; EINECS 207-966-4 ; Methanedisulphonic acid
CAS NO: 503-40-2 
Index of Refraction: 1.581
Molar Refractivity: 27.37 cm3
Molar Volume: 82.1 cm3
Surface Tension: 119.9 dyne/cm
Density: 2.145 g/cm3

Uses

  Methanedisulfonic acid (CAS NO.503-40-2) is used as the main additive in the hard chromium plating process.