Butylate (herbicide)

Butylate
Names
Preferred IUPAC name
S-Ethyl N,N-bis(2-methylpropyl)carbamothioate
Other names
  • Butilate
  • Sutan
  • S-Ethyl diisobutylthiocarbamate
  • S-Ethyl N,N-diisobutylthiocarbamate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.016.289 Edit this at Wikidata
UNII
  • InChI=1S/C11H23NOS/c1-6-14-11(13)12(7-9(2)3)8-10(4)5/h9-10H,6-8H2,1-5H3
    Key: BMTAFVWTTFSTOG-UHFFFAOYSA-N
  • CCSC(=O)N(CC(C)C)CC(C)C
Properties
C11H23NOS
Molar mass 217.37 g·mol−1
Appearance Amber liquid[1]
Odor Aromatic odor[1]
Density 940 kg/m3[2]
Melting point 137.7[2] °C (279.9 °F; 410.8 K)
Boiling point 292.6 °C (558.7 °F; 565.8 K) [3]
45 mg/L[2]
Vapor pressure 170 mPa[2]
Hazards
GHS labelling:
H312, H332[2]
Flash point 115 °C (239 °F; 388 K)
Lethal dose or concentration (LD, LC):
  • 3500 mg/kg (rat, oral)
  • >4640 mg/kg (birds)[2]
>4.2 mg/L (freshwater fish, 96 hours)[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Butylate or butilate is a widely used thiocarbamate herbicide. As a herbicide, it was introduced in 1962,[2] and it quickly became the fourth most used herbicide in the US, with 28.5 million pounds (12.9 thousand tonnes) used in 1974.[4] Its use has declined significantly, to 15 million pounds (6.8 thousand tonnes) in 1991 to 950 thousand pounds (430 tonnes) by 1998. It is used on corn (field, sweet, and popcorn), to control grassy and broadleaf weeds and nutsedge.[5]

  1. ^ a b "Butylate". pubchem.ncbi.nlm.nih.gov.
  2. ^ a b c d e f g h Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242
  3. ^ "Butylate | C11H23NOS". www.chemspider.com.
  4. ^ "Pesticide Usage Survey of Agricultural, Governmental, and Industrial Sectors in the United States, 1974". epa.gov. EPA. 1977.
  5. ^ "Butylate | Pesticides | US EPA". archive.epa.gov. Retrieved 18 November 2024.