BUTACHLOR

Common Name of Active Ingredient : Butachlor (BSI, ISO, ANSI, JMAF, WS-SA)

Brand name: Machete, Butataf, Butanex, Farmachlor, Dhanuchlor, Rasayanchlor, Trapp, Direk.

Chemical Name of Active Ingredient (IUPAC designation)

  N-butoxymethyl-α-chloro-2’,6’-diethylacetanilide

  2.3 Chemical Abstract Service Number (CASN)

CAS No: 23184-66-9

Empirical formula:C₁₇H₂₆CLNO₂

Molecular weight:  311.5

Structural formula:

Activity: chloroacetanilide herbicide

Composition of Technical Material including Impurities (all materials present at or over 0.1 %) (see note 4)

  For Active Ingredient only.

           Butachlor 92% technical 100% composition

           Active ingredient               92%min

           2,6-diethyl aniline              0.5%max

           formaldehyde                     0.5%max

           2,6-diethyl phenyl acetrile   1.0%max

           dichloroyde                          1.0%max

           2,6-diethyl ethyl acetochlorianilide   1.8%max

           n-butanol                              0.5%max

           metsgotmslfrhyde                 1.0%max

           chloromethyl ethyl ether        1.2%max

           water                                      0.5%max

           total                                        100.0%

Appearance: slight yellow aromatic liquid

Melting Point: Active Ingredient Technical grade only.: 5℃

Boiling Point: Active Ingredient Technical grade only.: 156℃

Vapour Pressure: At 20°C – for Active Ingredient Technical Grade only (see note 2): 0.6mPa.

Density of Specific Gravity: Active Ingredient Technical Grade: 1.07g/ml

              -Half-life in soil: degrade 90% within 100 days

Solubility in water and solvents: for Active Ingredient Technical Grade only.: water, 20mg/l, soluble in ester, acetone, benzene, alcohol, hexane and some other organic solvent.

Application: Butachlor is a Selective, systemic herbicide, absorbed primarily through germinating shoots and secondarily by roots. Translocated throughout the plant, with higher concentration in the vegetative parts than the reproductive parts, it's a pre-emergence for control grasses, some broadleaves & sedges,

recommended application rate (kg ai/ha):

·         Transplanted          0.75-1.0

·         Wet direct seeded  0.75-1.0 (Will cause phytotoxicity - best to use form with safener - Direk)

·         Dry direct seeded   0.75-1.0 - Not recommended

·         Label 1) concentration: 9 TBSP / 16L 2) spray volume: no information 3) spray rate: no information

recommended application time:

·         Transplanted          0-4 DAT

·         Wet direct seeded  2-5 DBS

·         Dry direct seeded   2-5 DBS - Not recommended

·         General instructions / field conditions:Needs a moist soil; DS : soil should be saturated on application and remain unflooded for 3 days. DS : apply to 3 to 5 cm of water, maintain water after application, but drain before seeding. TPR : apply on 3 to 5 cm water and retain water for 3 to 5 days after application.

·         use in herbicide mixtures: can be tank mixed with 2,4-D to give pre emergence control of grasses, sedges and broadleaves.