METHANE SULFONYL CHLORIDE

PRODUCT IDENTIFICATION

CAS NO.

124-63-0

METHANE SULFONYL CHLORIDE

EINECS NO.

240-706-1

FORMULA CH3SO2Cl
MOL WT.

114.55

HS CODE

2904.10

TOXICITY

Oral rat LD50: 50 mg/kg
SYNONYMS Chloro Methyl Sulfone;
Mesyl Chloride; Methanesulfonic acid chloride; Methylsulfonyl chloride;
SMILES Mercaptomethane, Dmethyldisulfide (DMDS)

CLASSIFICATION

Sulfonated hydrocarbon derivative

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Colourless To Pale Yellow Fuming Liquid
MELTING POINT -32 C
BOILING POINT 162 C
SPECIFIC GRAVITY

1.48

SOLUBILITY IN WATER Reacts
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 

REFRACTIVE INDEX

1.45

FLASH POINT 110 C
STABILITY Stable under ordinary conditions. Moisture sensitive

APPLICATIONS

Sulfonic acid is a compound with general formula RSO2OH, where R is an aliphatic or aromatic hydrocarbon. It is a derivative of sulfuric acid (HOSO2OH) where an OH has been replaced by a carbon group or a compound where a hydrogen atom has been replaced by treatment with sulfuric acid; for example, benzene is converted to benzenesulfonic acid (water-soluble). Sulfonic acid has a sulfur atom bonded to a carbon atom of a hydrocarbon and bonded also to three oxygen atoms, one of which has been attached to a hydrogen atom. Sulfonic acid is acidic due to the hydrogen atom, stronger than a carboxylic acid. Sulfonic acid is one of the most important organo sulfur compounds in organic synthesis. Sulfonic acids are used as catalysts in esterification, alkylation and condensation reactions. Sulfonates are salts or esters of sulfonic acid. Sulfonic salts are soluble in water. Sulfonic acid and its salts present in organic dyes provide useful function of water solubility and or improve the washfastness of dyes due to their capabiltity of binding more tightly to the fabric. They are widely used in the detergent industry. Alkylbenzene sulfonic acid is the largest-volume synthetic surfactant because of its relatively low cost, good performance, the fact that it can be dried to a stable powder and the biodegradable environmental friendliness. Sulfonate cleaners do not form an insoluble precipitates in hard water. Sulfonic acid salts and esters are intermediates widely used in organic synthesis and particularly phenolic compounds and cation exchange resins. They are synthetic intermediate for a number of biologically active compounds and pharmaceutical candidates such as sulfa drugs. Short carbon chain metallic sulfonate is used in electroplating which is a process for applying a metallic coating on a metal surface by electrodeposition from a suitable electrolyte solution for imparting corrosion resistance and direct production of printed circuit boards without etching out of a piece of copper sheet. Methanesulfonic acid is used as the acid electrolyte in the electroplating because many metals which are not soluble in mineral or organic acids are soluble, particularly tin and lead plating. Stannic sludge formation is rare as methanesulfonic acid is a non-oxidizing acid. Electroplating baths for lead frames, connectors, printed circuit boards, and wire are complex of methanesulfonic acid itself and its salts along with additives enhancing the performance.

Methylsulphonic acid has applications in the fields include:

  • Electroplating and electrochemical processes
  • Alkylation, esterification and condensation reactions
  • Lead recovery
  • Chemical intermediate for manufacture of drugs and pesticides
  • Petroleum refining and lube oil additives
  • Extraction and process solvent
  • Plastic stabilizers

Mesyl Chloride is widely used as a catalyst, chlorination agent and stabilizer for organic synthesis and as an intermediate for photographic chemicals, agrochemcials, dyses and pharmaceuticals. It can be used as a bactericide.

SALES SPECIFICATION

APPEARANCE

Colourless To Pale Yellow Liquid
PURITY 99.5% min.

MOISTURE

0.3% max

RESIDUE IMPURITY

0.1% max

IRON

10ppm max

HEAVY METAL (AS PB)

10ppm max

COLOR (APHA)

50 max

TRANSPORTATION
PACKING 250kgs in Drum
HAZARD CLASS 6.1
UN NO. 3246
OTHER INFORMATION
Hazard Symbols: C, Risk Phrases: 35, Safety Phrases: 23-24/25-36/37/39