Methylenedithiocyanate

Structural formula
General
Surname	Methylenedithiocyanate
other names	Diithiocyanate methane; Methylenedirhodanide; MBTC;
Molecular formula	C 3 H 2 N 2 S 2
Brief description	pale yellow crystals or powder
External identifiers / databases
EC number	228-652-3
ECHA InfoCard	100,026,048
PubChem	22772
ChemSpider	21349
Wikidata	Q1963090
properties
Molar mass	130.19 g mol −1
Physical state	firmly
density	1.045 g cm −3
Melting point	102-106 ° C
boiling point	Decomposition at> 110 ° C
solubility	Decomposes in water
safety instructions
H and P phrases	H: 301-330-314-317-400
	P: 273-280-301 + 330 + 331-304 + 340-310-305 + 351 + 338
Toxicological data	55 mg kg −1 ( LD 50 , rat , oral ) ; > 2000 mg kg −1 ( LD 50 , rat , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Methylenedithiocyanate is a chemical compound from the group of thiocyanates . It is used as a biocide for water disinfection in cooling circuits and as an anti-slime agent in paper production.

Extraction and presentation

Methylenedithiocyanate can be obtained by reacting ammonium , sodium or potassium thiocyanate with dibromomethane or diiodomethane .

${\ displaystyle \ mathrm {2 \ NaSCN \ + \ CH_ {2} I_ {2} \ longrightarrow \ CH_ {2} (SCN) _ {2} \ + \ 2 \ NaI}}$

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g entry to Methylendithiocyanat in the GESTIS database of IFA , accessed on January 8, 2020(JavaScript required) .
↑ ^a ^b ^c Datasheet from Tolcide (PDF; 304 kB) from Rhodia , accessed on December 2, 2014.
↑ Entry on Methylene dithiocyanate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ Patent application US3524871 : Sequestering solvent process for the production of methylene to thiocyanate. Applied on May 23, 1967 , published August 18, 1970 , applicant: Nalco Chemical Co, inventor: Matt Joseph. ‌

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g entry to Methylendithiocyanat in the GESTIS database of IFA , accessed on January 8, 2020(JavaScript required) .

[chempak-2] Datasheet from Tolcide (PDF; 304 kB) from Rhodia , accessed on December 2, 2014.

[CLP_100.026.048-3] Entry on Methylene dithiocyanate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[4] Patent application US3524871 : Sequestering solvent process for the production of methylene to thiocyanate. Applied on May 23, 1967 , published August 18, 1970 , applicant: Nalco Chemical Co, inventor: Matt Joseph. ‌