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001284 - Methanesulfinic acid, sodium salt

CAS Number 20277-69-4 MDL Number MFCD00040392
Boiling Point Melting Point 223-225°
Density Purity 90%
Molecular Formula CH3NaO2S Molecular Weight 102.08
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25g £ 32.00 > 10
100g £ 54.00 5
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Hazards and Precautions


Hazard Statements

H302: Harmful if swallowed.
H312: Harmful in contact with skin.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H332: Harmful if inhaled.
H335: May cause respiratory irritation.

Precautionary Statements

P233: Keep container tightly closed.
P260: Do not breathe .
P261: Avoid breathing
P264: Wash hands thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P271: Use only outdoors or in a well-ventilated area.
P280: Wear .
P301 + P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P312: Call a POISON CENTER or doctor/physician if you feel unwell.
P321: Specific treatment (see . on this label).
P322: Specific measures (see . on this label).
P330: Rinse mouth.
P332 + P313: If skin irritation occurs: Get medical advice/ attention.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P340: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P362: Take off contaminated clothing and wash before reuse.
P363: Wash contaminated clothing before reuse.
P403: Store in a well-ventilated place.
P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
P405: Store locked up.
P501: Dispose of contents/container to local regulations.

None Hazardous for Transport

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Technical Information

A reagent that can react with electrophilic carbon atoms to form methyl sulfones in a single step.1 Applied in stereoselective synthesis of (E)-alkenyl sulfones from alkenes or alkynes,2 preparation of branched allylic sulfones by iridium-catalyzed allylation,3 reaction with α-halo ketones under microwave irradiation to  afford the corresponding β-keto sulfones,4 introduction of a sulfone group to pyridines and diazines,5 synthesis of β-hydroxy-sulfones via opening of epoxides in ionic liquid,6 preparation of aryl and alkenylsulfones from the cross-coupling reaction with organoboronic acids,7 and synthesis of vinyl sulfones.8 Starting material for synthesis of aryl sulfoxides and sulfonium salts in trifluoromethanesulfonic acid as a novel sulfurizing agent.9 Catalyst used in preparation of heteroarenecarbonitriles,10 and in synthesis of 2-aroylquinoxalines, 1-aroylphthalazines, and 4-aroylcinnolines.11


1.        J. Am. Chem. Soc. 195375, 5582.
2.        Synlett 2011, 1308.
3.        Org. Lett. 201012, 92.
4.        Green Chem. Lett. Rev. 20081, 179.
5.        Tetrahedron Lett. 200950, 1928.
6.        J. Sulfur Chem. 200728, 513.
7.        Tetrahedron 200763, 7667.
8.        Synthesis 2007, 1465.
9.        Chem. Comm. 1996, 2099.
10.        Heterocycles 199849, 405.
11.        Heterocycles 199439, 345.