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CAS No.: | 503-40-2 |
---|---|
Name: | Methanedisulphonic acid |
Article Data: | 60 |
Molecular Structure: | |
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 |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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% |
methylene trithiocarbonate
methanedisulfonic acid
Conditions | Yield |
---|---|
With nitric acid |
Conditions | Yield |
---|---|
With sulfuric acid |
Conditions | Yield |
---|---|
With sulfuric acid; sulfur trioxide bis zum Entweichen von schwefliger Saeure; | |
With sulfuric acid; sulfur trioxide at 210℃; |
LACTIC ACID
methanedisulfonic acid
Conditions | Yield |
---|---|
With sulfuric acid; sulfur trioxide bis zur Entwicklung von schwefliger Saeure, dann Saettigen mit BaCO3; | |
With sulfuric acid; sulfur trioxide |
Conditions | Yield |
---|---|
With sulfur trioxide |
Conditions | Yield |
---|---|
With sulfur trioxide at 140℃; | |
With aminosulfonic acid at 25 - 150℃; for 3h; Reagent/catalyst; Temperature; |
Conditions | Yield |
---|---|
With sulfur trioxide |
Conditions | Yield |
---|---|
With potassium sulfite at 150℃; |
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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
Methanedisulfonic acid (CAS NO.503-40-2) is used as the main additive in the hard chromium plating process.