Lead (II) thiocyanate

Structural formula
General
Surname	Lead (II) thiocyanate
other names	Lead rhodanide
Molecular formula	Pb (SCN) 2
Brief description	white odorless solid
External identifiers / databases
EC number	209-774-6
ECHA InfoCard	100,008,887
PubChem	11616
Wikidata	Q2572355
properties
Molar mass	323.35 g mol −1
Physical state	firmly
density	3.82 g cm −3
Melting point	190 ° C (decomposition)
solubility	poor in water (0.5 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 302-312-332-360Df-373-410
	EUH: 032
	P: 201-273-280-308 + 313-501
MAK	0.15 ml m −3 , mg m −3
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lead (II) thiocyanate (obsolete Bleirhodanid ) is an inorganic chemical compound of the lead from the group consisting of thiocyanates , the salts of thiocyanic acid (thiocyanic acid).

Extraction

Lead thiocyanate is obtained from a reaction of lead (II) acetate with potassium thiocyanate or ammonium thiocyanate . Reaction with potassium thiocyanate:

{\ displaystyle \ mathrm {Pb (CH_ {3} COO) _ {2} \ + \ 2 \ KSCN \ rightarrow Pb (SCN) _ {2} \ downarrow \ + \ 2 \ K (CH_ {3} COO)} }

Lead thiocyanate was previously used to determine the rhodium number (RhZ, one of the fat indicators ).

↑ ^a ^b ^c ^d ^e ^f ^g ^h Entry on lead thiocyanate in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .
↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the indicated labeling falls under the group entries on lead compounds with the exception of those specified elsewhere in this Annex and metal salts of thiocyanic acid, with the exception of those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 18, 2017. Manufacturers or distributors can expand the harmonized classification and labeling .