CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Metam sodium (compounds, weed, killing, liquid) appears as a yellow to light yellow-green solution with an odor of amine and sulfur that varies in intensity. |
|---|---|
| Color/Form | White crystals |
| Boiling Point | BP: 110 °C /Commercial product/ |
| Melting Point | Decomposes without melting |
| Solubility | Crystals; anhydrous at 130 °C; moderately sol in alcohol; 72.2 g/100 mL water at 20 °C; moderately sol in alcohol; sparingly sol in other solvents; unpleasant odor, similar to that of disulfide. /Sodium methyldithiocarbamate dihydrate/ |
| Vapor Pressure | Non-volatile |
| LogP | log Kow <1 at 25 °C |
| Stability/Shelf Life | Stable with only slight decomp on storage for several yr in glass containers as 32.7% solution in alkaline water; pure solid decomposes in several weeks. |
| Decomposition | When heated to decomposition, it emits very toxic fumes of /nitrogen oxides, sulfur oxides, and disodium oxide/... |
| Corrosivity | THE AQUEOUS SOLUTION IS CORROSIVE TO BRASS, COPPER AND ZINC |
| Other Experimental Properties | Colorless crystals. /Dihydrate/ |
| Chemical Classes | Pesticides -> Dithiocarbamates (Pesticide) |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07  Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H314:Skin corrosion/irritation H317:Sensitisation, Skin H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
| Molecular Weight | 129.18 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 128.96828576 g/mol |
| Monoisotopic Mass | 128.96828576 g/mol |
| Topological Polar Surface Area | 45.1 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 46.8 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 2 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Metam sodium (compounds, weed, killing, liquid) appears as a yellow to light yellow-green solution with an odor of amine and sulfur that varies in intensity.