Sodium methanethiolate

Basic Information

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CAS Number

540-72-7

Molecular Formula

CH3NaS

Molecular Weight

47.1 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Nitriles

Basic Physical Properties

Melting Point

287 °C (dec.)

Boiling Point

146°Cat760mmHg

Water Solubility

139 g/100 mL (21 ºC)

Flash Point

42.1°C

Solubility

H2O: 8 M at 20 °C, clear, colorless

SMILES

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[S-]C#N.[Na+]

InChI

InChI=1S/CH4S.Na/c1-2;/h2H,1H3;/q;+1/p-1

InChIKey

RMBAVIFYHOYIFM-UHFFFAOYSA-M

LogP

0.1631

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

34.5

Safety Information

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GHS Hazard Pictograms

H302

H331

H412

Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H331 Toxic if inhaled
Acute toxicity, inhalation

H412 Harmful to aquatic life with long lasting effects
Hazardous to the aquatic environment, long-term hazard

Stability

Stable. Incompatible with acids, strong bases. May decompose on exposure to light. Contact with acid liberates highly toxic gas.

Sensitiveness

Hygroscopic

Toxicity

LD50 orally in rats: 764 mg/kg; i.v. in mice: 484 mg/kg (Anderson, Chen)

Synonyms & References

English

Sodium sulfocyanate
Sodium rhodanide
Sodium thiocyanate
haimased
natriumrhodanid
scyan
sodiumthiocyanide
thiocyanatesodium
usafek-t-434
SODIUM RHODANATE
ACS
Sodium isothiocyanate
Sodium isothiocyanate,Sodium rhodanate,Sodi
Sodium isothiocyanate,Sodium rhodanate,Sodium rhodanide
SodiuM rhodanide
SodiuMsulfocyanide
Additive Screening Solution 17
Kit-No 78374
Additive Screening Solution 17/Kit-No 78374
Thiocyanic acid, sodium salt
Thiocyanate sodium
NaSCN
Natrium rhodanatum
Sodium thiocyanide
Natrium thiocyanat
Sodium sulfocyanide
Caswell No. 796A
Natriumrhodanid [German]
Sodium thiocyanate solution
Thiocyanate, sodium
EPA Pesticide Chemical Code 068202

MDL Number

MFCD00011123

Customs Code

2842901100

FAQ

What is Sodium methanethiolate (CAS: 540-72-7)?

Sodium methanethiolate (CAS: 540-72-7) is a sodium salt of methanethiol, with the chemical formula CH3SNa. It appears as a colorless liquid, is highly soluble in water and organic solvents, and is known for its strong nucleophilic properties. Sodium methanethiolate is reactive with acids and bases, making it a key intermediate in organic synthesis and sulfur-containing compound production.

What are the main uses of Sodium methanethiolate (CAS: 540-72-7)?

Sodium methanethiolate (CAS: 540-72-7) is widely used in pharmaceuticals as a precursor for drug development involving sulfur chemistry. It finds applications in industrial processes for manufacturing pesticides, dyes, and specialty chemicals. In research, it serves as a versatile reagent for synthesizing sulfides and other functional groups. Its role in organic synthesis makes it relevant in chemical manufacturing and material science.

Is Sodium methanethiolate (CAS: 540-72-7) safe?

Sodium methanethiolate (CAS: 540-72-7) requires careful handling due to its potential toxicity. Inhalation or skin contact may cause irritation, while ingestion can lead to severe health effects. Safety standards emphasize the use of protective gear, such as gloves and goggles, and working in a well-ventilated area. It is classified as a hazardous material, necessitating adherence to OSHA and REACH guidelines for proper storage and disposal.

How should Sodium methanethiolate (CAS: 540-72-7) be stored?

Sodium methanethiolate (CAS: 540-72-7) should be stored in a cool, dry, and dark environment to maintain stability. It requires airtight containers to prevent exposure to moisture and air, which can cause hydrolysis. Storage conditions should avoid contact with strong oxidizers or incompatible substances. Keep at temperatures below 25°C and ensure humidity levels are controlled to preserve its chemical integrity.