TCMTB

TCMTB
Names
IUPAC name
1,3-benzothiazol-2-ylsulfanylmethyl thiocyanate
Other names
  • 2-(Thiocyanomethylthio)benzthiazole
  • Thiocyanic acid 2- (benzothiazolethio) methyl ester
  • Casacide[1]
Identifiers
3D model (JSmol)
ChEMBL
ECHA InfoCard 100.040.390
EC Number 244-445-0
RTECS number XK8150900
UNII
Properties
C9H6N2S3
Molar mass 238.34 g·mol−1
Appearance Red to brown liquid with pungent odor [2]
Density 1.05
Melting point −10 °C (14 °F; 263 K)[2]
Boiling point 191 °C (376 °F; 464 K)
Very slightly soluble (0.125 g/L at 24 ° C)[2]
log P 3.23
Vapor pressure 9.0×10−6 mmHg
Hazards
GHS pictograms
GHS signal word Danger
H302, H302, H312, H315, H317, H319, H330, H400, H410
P260, P261, P264, P270, P271, P272, P273, P280, P284, P301+312, P302+352, P304+340, P305+351+338, P310, P312, P320, P321, P322, P330, P332+313, P333+313, P337+313, P362, P363, P391
Lethal dose or concentration (LD, LC):
679 mg/kg (rat, oral)[2]
200 mg/kg (rabbit, dermal)[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

(Benzothiazol-2-ylthio)methyl thiocyanate (TCMTB) is a chemical compound classified as a benzothiazole.

Properties

TCMTB is an oily, flammable, red to brown liquid with a pungent odor that is very slightly soluble in water. It decomposes on heating producing hydrogen cyanide, sulfur oxides, and nitrogen oxides.[2] The degradation products are 2-mercaptobenzothiazole (2-MBT) and 2-benzothiazolesulfonic acid.[3]

Uses

TCMTB is used as wideband microbicide, paint fungicide, and paint gallicide.[2] The active substance approved in 1980 in the United States.[3] It is used, for example, in leather preservation,[4] for the protection of paper products, in wood preservatives, and against germs in industrial water.[3]

In the US, TCMTB is used as a fungicide for seed dressing in cereals, safflower, cotton and sugar beet.

It is also used in fracking when dealing with fungal problems when extracting hydrocarbons via fracking.[5]

Approval

TCMTB is not an authorized plant protection product in the European Union.[6] In Germany, Austria and Switzerland, no plant protection products containing this active substance are authorized.[7]

References

  1. ↑ Thomas Swan: Coating Additives & Leather Fungicides
  2. 1 2 3 4 5 6 7 Record of CAS RN 21564-17-0 in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 3. August 2012.
  3. 1 2 3 EPA: Reregistration Eligibility Decision for 2- (thiocyanomethylthio) benzothiazoles (TCMTB) (PDF ; 2.7 & nbsp; MB), August 2006.
  4. ↑ Engin Bagda (2000). "Biocides in Building Coatings". expert publisher. p. 59. ISBN 3-81691861-1.
  5. ↑ Levant, Ezra (2014). Groundswell: The Case for Fracking. McClelland & Stewart. p. 192.
  6. ↑ Commission Regulation (EC) No 2076/2002 of 20 November 2002 Template:EUR-Lex Act
  7. ↑ Template:PSM-del = EU- 2- (dithiocyanomethylthio) -benzothiazole
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