208465-21-8
| Name | Mesosulfuron-methyl |
| CAS | 208465-21-8 |
| Molecular Formula | C17H21N5O9S2 |
| MDL Number | MFCD04112616 |
| Molecular Weight | 503.51 |
| MOL File | 208465-21-8.mol |
Chemical Properties
| Melting point | 195.4° |
| density | 1.498±0.06 g/cm3(Predicted) |
| storage temp. | 0-6°C |
| solubility | Solubility in organic solvents (g/l at 20 °C) Acetone 13.66 Ethyl acetate 2.0 Dichloromethane 3.8 n‐Hexane <0.0002 Toluene 0.013. |
| form | neat |
| pka | Dissociation constant (pKa at 20 °C) : 3.22 (Under strong acidic conditions – pH 2 – formation of iodosulfuron methyl) |
| color | White to off-white |
| Water Solubility | Solubility in water (g/l at 20 °C) 0.007 (pH 5) 0.483 (pH 7) 15.39 (pH 9). |
| Henry's Law Constant | 9.0×1010 mol/(m3Pa) at 25℃, HSDB (2015) |
| Major Application | agriculture environmental |
| InChI | InChI=1S/C17H21N5O9S2/c1-29-13-8-14(30-2)20-16(19-13)21-17(24)22-33(27,28)12-7-10(9-18-32(4,25)26)5-6-11(12)15(23)31-3/h5-8,18H,9H2,1-4H3,(H2,19,20,21,22,24) |
| InChIKey | NIFKBBMCXCMCAO-UHFFFAOYSA-N |
| SMILES | C(OC)(=O)C1=CC=C(CNS(C)(=O)=O)C=C1S(NC(NC1=NC(OC)=CC(OC)=N1)=O)(=O)=O |
| EPA Substance Registry System | Benzoic acid, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl) amino]carbonyl]amino]sulfonyl]- 4-[[(methylsulfonyl)amino] methyl]-, methyl ester(208465-21-8) |
Safety Data
| Symbol(GHS) |  GHS09 |
| Signal word | Warning |
| Hazard statements | H410 |
| Precautionary statements | P273-P391-P501 |
| Hazard Codes | N |
| Risk Statements | |
| Safety Statements | |
| RIDADR | UN 3077 |
| WGK Germany | 2 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Aquatic Acute 1 Aquatic Chronic 1 |
| Hazardous Substances Data | 208465-21-8(Hazardous Substances Data) |
| Toxicity |