IUPAC Name: 2,2-dioxo-3-propan-2-yl-1H-benzo[c][1,2,6]thiadiazin-4-one 
Empirical Formula: C₁₀H₁₂N₂O₃S
Molecular Weight: 240.2789g/mol
EINECS: 246-585-8 
Structure of Bentazone (CAS NO.25057-89-0):

Index of Refraction: 1.582
Molar Refractivity: 59.66 cm³
Molar Volume: 178.5 cm³
Polarizability: 23.65×10^-24cm³
Surface Tension: 48 dyne/cm
Density: 1.345 g/cm³
Flash Point: 193.1 °C
Enthalpy of Vaporization: 64.59 kJ/mol 
Melting Point: 137-139°C
Boiling Point: 395.7 °C at 760 mmHg
Vapour Pressure: 1.8E-06 mmHg at 25°C 
Product Categories: HERBICIDE;Alphabetic;BA - BH;BA - BHPesticides&Metabolites;A-BAlphabetic;Alpha sort;B;Herbicides;Others;Pesticides&Metabolites 
Canonical SMILES: CC(C)N1C(=O)C2=CC=CC=C2NS1(=O)=O
InChI: InChI=1S/C10H12N2O3S/c1-7(2)12-10(13)8-5-3-4-6-9(8)11-16(12,14)15/h3-7,11H,1-2H3
InChIKey: ZOMSMJKLGFBRBS-UHFFFAOYSA-N

 Bentazone (25057-89-0) is a systemic herbicide, be adequate for rice, wheat, corn, sorghum, soybeans, peanuts, peas, alfalfa and other crops and pasture hemlock. It has excellent control efficiency for broad leaved weed and sedge.

Isopropylamine hydrochloride reacts with dichloro sulfuryl to gain isopropylamine sulfonyl chloride, then condensation with anthranilic acid methyl ester, and through closed loop to obtain Bentazone (25057-89-0).

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Hazard Codes: Xn,F
Risk Statements: 22-36-43-52/53-20/21/22-11
R22:Harmful if swallowed. 
R36:Irritating to eyes. 
R43:May cause sensitization by skin contact. 
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R11:Highly flammable.
Safety Statements: 2-24-37-61-36-26-16
S2:Keep out of the reach of children. 
S24:Avoid contact with skin. 
S37:Wear suitable gloves. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets. 
S36:Wear suitable protective clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S16:Keep away from sources of ignition.
RIDADR: UN 1648 3/PG 2
RTECS: DK9900000
Hazardous Substances Data 25057-89-0(Hazardous Substances Data)
Moderately toxic by ingestion and skin contact. An experimental teratogen. Other experimental reproductive effects. When heated to decomposition it emits very toxic fumes of SO_x and NO_x.

  Bentazone , its cas register number is 25057-89-0. It also can be called 1H-2,1,3-Benzothiadiazin-4(3H)-one, 3-(1-methylethyl)-, 2,2-dioxide (9CI) ; 1H-2,1,3-Benzothiadiazin-4(3H)-one-2,2-dioxide, 3-isopropyl- ; 3-(1-Methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide ; 3-Isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide ; 3-Isopropyl-1H-benzo-2,1,3-thiadiazin-4-one 2,2-dioxide ; 3-Isopropyl-2,1,3-benzothiadiazinon-(4)-2,2-dioxid ; Basagran ; Basagran-plus ; Bendioxide ; Bentazon ; EPA Pesticide Chemical Code 275200 ; Graminon-plus ; HSDB 3430 ; Herbatox ; Laddok ;
 Leader ; Pentazone ; Pledge.
Storage of Bentazone (CAS NO.25057-89-0): Protect against physical damage. Keep in tightly closed container in a shaded, well-ventilated area, away from heat, sparks and other sources of ignition. Keep out of reach of children and uninformed persons. Do not contaminate water, food or feed by storage or disposal.