Metham-Sodium (CAS 137-42-8) — formula C2H4NNaS2, molecular weight 129.18; category inorganic chemicals.
Documented applications: Uses: Used as a fungicide and nematicide, [Kanerva, p. 1834] Used as a soil fumigant for control of weeds, weed seeds, nematodes, fungi, and soil insects, [Merck Index] Used as non-selective soil fumigant that possesses fungicidal, herbicidal, insecticidal, and nematicidal properties, Approved for use on food, feed, and fiber crops, turf grass, sewers, and drained ponds and lakes (California only), Also used as antimicrobial agent for wood poles, leather processing, sugar cane and beet processing, sewage sludge, and animal waste, [Reference #2] Approved for use in the EU as a pre-plant soil disinfectant for vegetables, fruit trees, grape vines, nurseries, ornamentals, and other crops, [EFSA], Restricted use pesticide for application on golf courses, small areas of turf and soil, and in sewers and drains, [Reference #2], Applying Wood Preservatives [Category: Other], Farming (Pesticides) [Category: Industry], Sewer and Wastewater Treatment [Category: Industry], Leather Tanning and Processing [Category: Industry], For Sodium Methyldithiocarbamate (USEPA, OPP Pesticide Code: 039003) ACTIVE products with label matches., SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., Metam-sodium and metam-potassium are broad spectrum fumigants with fungicidal, bactericidal, algaecide, nematicidal, and antimicrobial properties. They are dithiocarbamate salts that break down quickly in the environment to the primary toxic degradate, methyl isothiocyanate (MITC). MITC is highly volatile and is responsible for the fumigant properties of metam-sodium and metam-potassium., Restricted Use Pesticide (RUP) Classification. MITC, the byproduct of metam sodium, metam potassium, and dazomet, meets the criteria for restricted use based on human hazard criteria and exposure incidents. All soil fumigant products containing metam sodium or metam potassium will be RUPs., Soil fumigant to control weeds and weed seeds, amd soil insects, For more Uses (Complete) data for SODIUM METHYLDITHIOCARBAMATE (11 total), please visit the HSDB record page., Use Classification: SOIL FUNGICIDES, Methods of Manufacturing:, It is, prepared from methylamine, carbon disulfide and sodium hydroxide, From methyl isothiocyanate and sodium bisulfide., Metam sodium is produced by reaction of methylamine with carbon disulfide and sodium hydroxide., Formulations, Preparations: Soluble concentrates, aqueous solutions., ... Since, pure metham, is unstable, the commercial formulation (Vapam) is always kept as a concentrated 32.7% solution in water., Trade Names ... Metam 426, Polefume, Turfcure, Vapam, Vapam HL, Busan 1236, Nemasol, Metam CLR, Sectagon 42, Sistan, Meter, Soldier, Basamid liquid (aq formulation containing 45% methylcarbamodithionic acid monosodium salt as ai), Metam-Fluid (aq formulation containing 42.2% methylcarbamodithionic acid monosodium salt as ai), VAPAM technical (technical formulation containing 32.9% methylcarbamodithionic acid monosodium salt as ai), For more Formulations, Preparations (Complete) data for SODIUM METHYLDITHIOCARBAMATE (37 total), Consumption Patterns: Approximately 51-55 million pounds of metam-sodium and 1-2 million pounds of metam-potassium used in the U.S. in 2002., U.S. Production: Carbamodithioic acid, methyl-, monosodium salt is listed as a High Production Volume (HPV) chemical (65FR81686). Chemicals listed as HPV were produced in or imported into the U.S. in >1 million pounds in 1990 and, or 1994. The HPV list is based on the 1990 Inventory Update Rule. (IUR) (40 CFR part 710 subpart B, 51FR21438)., General Manufacturing Information: The WHO Recommended Classification of Pesticides by Hazard identifies Metam-sodium (technical grade) as Class II: moderately hazardous, Main Use: fungicide-applied to soil: not used with herbicides or plant growth regulators., The, USEPA, has determined that certain uses of (1) metam sodium (including use as a pre-plant soil fumigant in certain crops, specified, in the R.E.D., and as a root control agent in sewers and drains, and as an antimicrobial agent to treat wood poles and timbers and sewage sludge and animal waste), (2) metam-potassium (including as a pre-plant soil fumigant in certain crops, specified later in this document, and as an antimicrobial agent for treatment of pulp and paper, tanning drum leather applications, recirculating cooling water systems, and industrial water purification systems), and (3) MITC (as an antimicrobial agent to treat wood poles and pilings) are eligible for reregistration, provided the risk mitigation measures outlined in, the R.E.D., are adopted, label amendments are made to reflect these measures ..., and data are developed to assess intermediate- and long-term risk to bystanders., Metham-sodium was introduced by Stauffer Chemical Company & later by EI du Pont de Nemours & Company, Inc, & ICI Plant Protection Division (neither of whom now market it). US patents 2, 766, 554, 2, 791, 605, GBP, British patent, 789, 690 all Stauffer Chemical Company as code number N-869 (Stauffer), trade marks Vapam (Stauffer), VPM (formerly du Pont), Sistan (ICI)., ..., Metham sodium gives, a complete kill of root knot nematodes in sandy soil at 5 ppm. It is an effective non-selective herbicide at rates of ... 200 lb, acre. ... it is particularly effective in cracks & under walks where the methyl isothiocyanate is confined., For more General Manufacturing Information (Complete) data for SODIUM METHYLDITHIOCARBAMATE (11 total).
Metham-Sodium is an inorganic compound with CAS registry number 137-42-8 and molecular formula C2H4NNaS2 (molecular weight 129.18), belonging to the inorganic chemicals segment of chemical raw materials.
CAS number: 137-42-8
Its molecular formula C2H4NNaS2 comprises 2 C, 4 H, 1 N, 1 Na, 2 S atoms.
Also known as: Metham-Sodium · metam-sodium
Category: inorganic chemicals
The CAS registry number of Metham-Sodium is 137-42-8.
Molecular formula C2H4NNaS2, molecular weight 129.18.
It is also registered under: Metham-Sodium, metam-sodium.
Recorded applications: Uses: Used as a fungicide and nematicide, [Kanerva, p. 1834] Used as a soil fumigant for control of weeds, weed seeds, nematodes, fungi, and soil insects, [Merck Index] Used as non-selective soil fumigant that possesses fungicidal, herbicidal, insecticidal, and nematicidal properties, Approved for use on food, feed, and fiber crops, turf grass, sewers, and drained ponds and lakes (California only), Also used as antimicrobial agent for wood poles, leather processing, sugar cane and beet processing, sewage sludge, and animal waste, [Reference #2] Approved for use in the EU as a pre-plant soil disinfectant for vegetables, fruit trees, grape vines, nurseries, ornamentals, and other crops, [EFSA], Restricted use pesticide for application on golf courses, small areas of turf and soil, and in sewers and drains, [Reference #2], Applying Wood Preservatives [Category: Other], Farming (Pesticides) [Category: Industry], Sewer and Wastewater Treatment [Category: Industry], Leather Tanning and Processing [Category: Industry], For Sodium Methyldithiocarbamate (USEPA, OPP Pesticide Code: 039003) ACTIVE products with label matches., SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., Metam-sodium and metam-potassium are broad spectrum fumigants with fungicidal, bactericidal, algaecide, nematicidal, and antimicrobial properties. They are dithiocarbamate salts that break down quickly in the environment to the primary toxic degradate, methyl isothiocyanate (MITC). MITC is highly volatile and is responsible for the fumigant properties of metam-sodium and metam-potassium., Restricted Use Pesticide (RUP) Classification. MITC, the byproduct of metam sodium, metam potassium, and dazomet, meets the criteria for restricted use based on human hazard criteria and exposure incidents. All soil fumigant products containing metam sodium or metam potassium will be RUPs., Soil fumigant to control weeds and weed seeds, amd soil insects, For more Uses (Complete) data for SODIUM METHYLDITHIOCARBAMATE (11 total), please visit the HSDB record page., Use Classification: SOIL FUNGICIDES, Methods of Manufacturing:, It is, prepared from methylamine, carbon disulfide and sodium hydroxide, From methyl isothiocyanate and sodium bisulfide., Metam sodium is produced by reaction of methylamine with carbon disulfide and sodium hydroxide., Formulations, Preparations: Soluble concentrates, aqueous solutions., ... Since, pure metham, is unstable, the commercial formulation (Vapam) is always kept as a concentrated 32.7% solution in water., Trade Names ... Metam 426, Polefume, Turfcure, Vapam, Vapam HL, Busan 1236, Nemasol, Metam CLR, Sectagon 42, Sistan, Meter, Soldier, Basamid liquid (aq formulation containing 45% methylcarbamodithionic acid monosodium salt as ai), Metam-Fluid (aq formulation containing 42.2% methylcarbamodithionic acid monosodium salt as ai), VAPAM technical (technical formulation containing 32.9% methylcarbamodithionic acid monosodium salt as ai), For more Formulations, Preparations (Complete) data for SODIUM METHYLDITHIOCARBAMATE (37 total), Consumption Patterns: Approximately 51-55 million pounds of metam-sodium and 1-2 million pounds of metam-potassium used in the U.S. in 2002., U.S. Production: Carbamodithioic acid, methyl-, monosodium salt is listed as a High Production Volume (HPV) chemical (65FR81686). Chemicals listed as HPV were produced in or imported into the U.S. in >1 million pounds in 1990 and, or 1994. The HPV list is based on the 1990 Inventory Update Rule. (IUR) (40 CFR part 710 subpart B, 51FR21438)., General Manufacturing Information: The WHO Recommended Classification of Pesticides by Hazard identifies Metam-sodium (technical grade) as Class II: moderately hazardous, Main Use: fungicide-applied to soil: not used with herbicides or plant growth regulators., The, USEPA, has determined that certain uses of (1) metam sodium (including use as a pre-plant soil fumigant in certain crops, specified, in the R.E.D., and as a root control agent in sewers and drains, and as an antimicrobial agent to treat wood poles and timbers and sewage sludge and animal waste), (2) metam-potassium (including as a pre-plant soil fumigant in certain crops, specified later in this document, and as an antimicrobial agent for treatment of pulp and paper, tanning drum leather applications, recirculating cooling water systems, and industrial water purification systems), and (3) MITC (as an antimicrobial agent to treat wood poles and pilings) are eligible for reregistration, provided the risk mitigation measures outlined in, the R.E.D., are adopted, label amendments are made to reflect these measures ..., and data are developed to assess intermediate- and long-term risk to bystanders., Metham-sodium was introduced by Stauffer Chemical Company & later by EI du Pont de Nemours & Company, Inc, & ICI Plant Protection Division (neither of whom now market it). US patents 2, 766, 554, 2, 791, 605, GBP, British patent, 789, 690 all Stauffer Chemical Company as code number N-869 (Stauffer), trade marks Vapam (Stauffer), VPM (formerly du Pont), Sistan (ICI)., ..., Metham sodium gives, a complete kill of root knot nematodes in sandy soil at 5 ppm. It is an effective non-selective herbicide at rates of ... 200 lb, acre. ... it is particularly effective in cracks & under walks where the methyl isothiocyanate is confined., For more General Manufacturing Information (Complete) data for SODIUM METHYLDITHIOCARBAMATE (11 total).
Category: Inorganic Chemicals.
Public-database records for Metham-Sodium (CAS 137-42-8), reproduced here for independent cross-checking.
| Reported hazard statements | H302, H314, H317, H400, H410, H311 (75.8%), H319 (55.9%), H332 (19.9%) |
|---|
H302: Harmful if swallowed [Warning Acute toxicity, oral]
H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
| 溶解度 | In water, 7.22X10+5 mg/L at 20 °C |
|---|---|
| LogP | log Kow <1 at 25 °C |
| CAS Registry Number | 137-42-8 |
|---|---|
| PubChem CID | 5366415 |
| 分子式 | C2H4NNaS2 |
| IUPAC 名称 | sodium N-methylcarbamodithioate |
| UNII（FDA） | 3CD7UKN224 |
Metam-sodium; Metam sodium; Carbathione; Carbothion; Metamsodium; Trimaton; SMDC; Carbation; Karbation; Masposol; Mapasol; Sepivam; Sistan; Sometam; Carbam; Geort
| 分子量 | 129.18 |
|---|---|
| 氢键供体数 | 1 |
| 氢键受体数 | 2 |
| 可旋转键数 | 0 |
| 精确质量 | 128.96828576 |
| 单同位素质量 | 128.96828576 |
| 拓扑极性表面积 | 45.1 |
| 重原子数 | 6 |
| 形式电荷 | 0 |
| 复杂度 | 46.8 |
Metham-Sodium · CAS 137-42-8 · C2H4NNaS2. UNII 3CD7UKN224. 溶解度: In water, 7.22X10+5 mg/L at 20 °C; LogP: log Kow <1 at 25 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.