Monolinuron
- CAS NO.:1746-81-2
- Empirical Formula: C9H11ClN2O2
- Molecular Weight: 214.65
- MDL number: MFCD00055264
- EINECS: 217-129-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-03-28 16:55:20
What is Monolinuron?
Definition
ChEBI: Monolinuron is a member of ureas.
Reactions
Nitrite or nitrate induced-photolysis of monolinuron (a phenyl urea herbicide) using the 300–450 nm light excitation gives rise to various photo-products. The direct photolysis of monolinuron proceeds via two main pathways yielding, respectively, 3-(4-chlorophenyl)-1-methylurea, which results from demethoxylation of the N-terminus substituted functional group and 3-(4-hydroxyphenyl)-1-methoxy-1- methylurea obtained by photohydrolysis of the C-Cl bond[1].
Degradation pathways of monolinuron by direct and nitrite (or nitrate) induced photolysis. Specific photoproducts: circled numbers (direct); underlined numbers (induced):
Safety Profile
Moderately toxic by ingestion. Experimental teratogenic and reproductive effects. When heated to decomposition it emits very toxic fumes of Cland NOx.
References
[1] S. Nélieu. “Nitrite and nitrate induced photodegradation of monolinuron in aqueous solution.” Environmental Chemistry Letters 2 2 (2004): 83–87.
Properties of Monolinuron
Melting point: | 81.5℃ |
Density | 1.3575 (rough estimate) |
refractive index | 1.5790 (estimate) |
Flash point: | 100 °C |
storage temp. | Sealed in dry,Room Temperature |
form | neat |
pka | 12.80±0.70(Predicted) |
color | White to Light yellow to Light orange |
Water Solubility | 0.58g/L(room temperature) |
BRN | 2212523 |
InChI | InChI=1S/C9H11ClN2O2/c1-12(14-2)9(13)11-8-5-3-7(10)4-6-8/h3-6H,1-2H3,(H,11,13) |
EPA Substance Registry System | Monolinuron (1746-81-2) |
Safety information for Monolinuron
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09 |
GHS Hazard Statements |
H302:Acute toxicity,oral H373:Specific target organ toxicity, repeated exposure H410:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P314:Get medical advice/attention if you feel unwell. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
Computed Descriptors for Monolinuron
InChIKey | LKJPSUCKSLORMF-UHFFFAOYSA-N |
SMILES | N(OC)(C)C(NC1=CC=C(Cl)C=C1)=O |
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