Chemistry informtion about Bensulide (CAS NO.741-58-2) is:
IUPAC Name: N-[2-Di(Propan-2-Yloxy)Phosphinothioylsulfanylethyl]Benzenesulfonamide
Synonyms: Bensulide ; Bensulide(Content>35%) ; Bensumac ; Bensumec ; Bensumec(R) ; Betasan ; Betasan(R) ; Exporsan
Product Categories: A-BAlphabetic ; Alpha sort ; B ; BA - BHPesticides&Metabolites ; Herbicides ; Organophosphorous ; Pesticides&Metabolites 
MF: C₁₄H₂₄NO₄PS₃
MW: 397.51
EINECS: 212-010-4
Density: 1.261 g/cm³
Flash Point: 248.4 °C
Boiling Point: 487.2 °C at 760 mmHg
Vapour Pressure: 1.21E-09 mmHg at 25°C
Enthalpy of Vaporization: 75.3 kJ/mol
Storage temp.: 2-8°C
Following is the molecular structure of Bensulide (CAS NO.741-58-2) is:

Bensulide (CAS NO.741-58-2) can be used as an insecticide.Also it used on vegetable crops such as carrots, cucumbers, peppers, and melons and in cotton and turfgrass to control annual grasses (such as bluegrass and crabgrass) and broadleaf weeds. It is often formulated as an emulsifiable liquid and applied before the weed seeds germinate in order to prevent them from germinating.

Poison by ingestion. Moderately toxic by skin contact. An herbicide. When heated to decomposition it emits very toxic fumes of NO_x, SO_x, and PO_x. See also ESTERS.
Hazard Codes:
Xn
N
Risk Statements:
R22:Harmful if swallowed. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements:
S24:Avoid contact with skin. 
S36:Wear suitable protective clothing. 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 2811 6.1/PG 3
RTECS: TE0250000

Bensulide (CAS NO.741-58-2) is an organophosphate acetylcholinesterase inhibitor. It can be absorbed on root surfaces and a small amount is absorbed by the roots. Little or none is translocated upward to the leaves. It is toxic to aquatic organisms, bees, and slightly toxic to birds.