硫氰酸铅

Description

lead(ii) thiocyanate · CAS 592-87-0 · C2N2PbS2. UNII 7977FZ765Q. Melting Point: 374 °F; Melting Point: 190 °C, DECOMPOSES; Solubility: 0.05 g/100 cc water at 20 °C.

Identification

CAS Registry Number	592-87-0
PubChem CID	11616
Molecular formula	C2N2PbS2
IUPAC name	lead(2+) dithiocyanate
UNII (FDA)	7977FZ765Q

Computed Descriptors

Molecular Weight	323
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	323.92694
Monoisotopic Mass	323.92694
Topological Polar Surface Area	49.6
Heavy Atom Count	7
Formal Charge	0
Complexity	31.3

Physical & Chemical Properties

Melting Point	374 °F
Melting Point	190 °C, DECOMPOSES
Solubility	0.05 g/100 cc water at 20 °C
Density	3.82 at 20 °C

Physical description & handling notes

• Lead thiocyanate appears as a white to yellow crystalline solid. Slightly soluble in water and denser than water. Primary hazard is threat to the environment. Immediate steps should be taken to limit spread to the environment. Used to make explosives, safety matches, and in dyeing.
• White to yellow crystals; [CAMEO]
• White or light yellow crystalline powder
• Odorless
• Soluble in 200 parts cold water and 50 parts warm water. Soluble in alkali hydroxide and thiocyanate solutions
• Soluble in potassium thiocyanate, nitric acid; slightly soluble in cold water; decomposes in hot water.

GHS Hazard Classification

Reported hazard statements	H302 (97.8%), H312 (97.8%), H332 (97.8%), H360 (97.8%), H373 (100%), H400 (100%), H410 (100%), H341

Documented Uses

• Used to reverse aniline black dyeing; also used to make safety matches and cartridges; [Merck Index] Used in priming mix of small-arms cartridges; [Hawley]
• Reverse dyeing with aniline black; manufacture of safety matches and cartridges[The Merck Index, Fourteenth Edition (2006)
• /Used in the formulation of/ corrosive percussion primers in pyrotechnic devices
• Ingredient of priming mix for small-arms cartridges, safety matches, dyeing.
• The explosive properties of lead thiocyanate have found limited use.
• 200 to 300 milligrams for an adult human (cyanide salts). (T86)

Synonyms

LEAD THIOCYANATE; Lead sulfocyanate; Lead dithiocyanate; Lead isothiocyanate; Lead thiocyanate (Pb(SCN)2); Thiocyanic acid, lead(2+) salt; 7977FZ765Q; Thiocyanic acid lead(2+) salt (2:1); DTXSID90890513; Isothiocyanic acid, lead(2+) salt; Lead(II) thiocyanate (Pb(NCS)2); bis(cyanosulfanyl)plumbane; RefChem:798775; LEAD BIS(THIOCYANATE); LEAD(2+) THIOCYANATE; DTXCID101326569

Frequently Asked Questions

What are the CAS number and molecular formula of lead(ii) thiocyanate?

CAS 592-87-0; molecular formula C2N2PbS2; molecular weight — g/mol.

What other names is lead(ii) thiocyanate known by?

LEAD THIOCYANATE, Lead sulfocyanate, Lead dithiocyanate, Lead isothiocyanate, Lead thiocyanate (Pb(SCN)2), Thiocyanic acid, lead(2+) salt.

Is lead(ii) thiocyanate classified as hazardous?

Hazard statements reported: H302, H312, H332, H360, H373.

What are the key physical properties of lead(ii) thiocyanate?

Melting Point: 374 °F; Melting Point: 190 °C, DECOMPOSES; Solubility: 0.05 g/100 cc water at 20 °C; Density: 3.82 at 20 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.