Substance profile
Metam-sodium
Metam-sodium is white crystals.
01 · Identification
What Metam-sodium is
Metam-sodium is white crystals. It boils at 110 °C.
Under the GHS it carries the signal word Danger.
Other names for Metam-sodium
- metam-sodium (ISO)
- sodium methyldithiocarbamate
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Supplemental EU statements: EUH031
Precautionary statements: P260, P261, P270, P272, P273, P280, P301, P310, P312, P313, P330, P331, P333, P391, P501
03 · Physical and chemical properties
Metam-sodium properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 110 °C (230 °F) | Commercial product | HSDB |
| Melting point | Decomposes without melting | decomposes | HSDB |
| Solubility | In acetone, ethanol, kerosene, xylene < 5 g/L. Practically insoluble in most other organic solvents. | HSDB | |
| In water, 7.22X10+5 mg/L at 20 °C | at 20 °C | HSDB | |
| Moderately soluble in alcohol; stable in concentrated aqueous solution but decomposes in dilute aqueous solutions | decomposes | HSDB | |
| Vapor pressure | Non-volatile | HSDB | |
| Lower explosive limit (LEL) | Non flammable. | Metham Sodium Dihydrate | HSDB |
| Corrosivity | THE AQUEOUS SOLUTION IS CORROSIVE TO BRASS, COPPER AND ZINC | HSDB | |
| Aluminum, very rapid corrosion; mild steel, 0.7 mg/day/sq m; stainless steel, <0.2 mg/day/sq m | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Metam-sodium
Storage conditions
Store in a cool, dry place. Keep container closed when not in use. Do not store below 32 dg F. Product crystalizes at lower tempratures. Warm or store at higher tempratures and mix to redissolve crystals and assure uniformity before use. /Vapam/
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Metam-sodium in the storage compatibility matrix →