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CAS No.: | 137-42-8 |
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Name: | Metham sodium |
Article Data: | 4 |
Cas Database | |
Molecular Structure: | |
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Formula: | C2H4NNaS2 |
Molecular Weight: | 129.182 |
Synonyms: | Carbamicacid, methyldithio-, monosodium salt (8CI);BAY 5590;Carbam;Geort;Karbation;Maposol;Metam-sodium;Monam;Nematin;Sepivam;Sistan;Sodium metam;Sodium methyldithiocarbamate;Sodium monomethyldithiocarbamate;Trimaton;VPM;Vapam HL;Woodfume;Metham sodium; |
EINECS: | 205-293-0 |
Density: | 1.2[at 20℃] |
Boiling Point: | 120.3 °C at 760 mmHg |
Flash Point: | 26.6 °C |
Solubility: | 72.2 g/100 mL at 20 °C in water |
Appearance: | yellow to light yellow-green aqueous solution |
Hazard Symbols: |
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Risk Codes: | 22-31-34-50/53-43 |
Safety: | 26-36/37/39-45-60-61 |
Transport Information: | UN 2811 |
PSA: | 69.42000 |
LogP: | 1.07910 |
Conditions | Yield |
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With sodium hydroxide In water | 100% |
With sodium hydroxide In methanol; diethyl ether at 20℃; for 24h; | 98% |
With sodium hydroxide In ethanol; water at 20℃; pH=9.5 - 10; Addition; | |
With sodium hydroxide In water at 20℃; for 3h; Sealed tube; |
Conditions | Yield |
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With sodium hydroxide In water at 25℃; for 2.5h; Sealed tube; |
sodium N-methyldithiocarbamate
cinnamoyl chloride
6-phenyl-3-methylpropiorhodanine
Conditions | Yield |
---|---|
In water; acetone at 45℃; for 2h; | 95% |
sodium N-methyldithiocarbamate
N-phenyl-benzimidoyl chloride
A
methyl thioisocyanate
B
N-Phenylbenzothioamide
Conditions | Yield |
---|---|
In diethyl ether 0 deg C to r.t.; | A 51% B 95% |
sodium N-methyldithiocarbamate
acryloyl chloride
3-Methyl-4-oxo-2-thioxo-tetrahydro-1,3-thiazin
Conditions | Yield |
---|---|
In water; acetone for 1h; Ambient temperature; | 94% |
sodium N-methyldithiocarbamate
p-nitrocinnamoyl chloride
3-Methyl-6-(4-nitro-phenyl)-2-thioxo-[1,3]thiazinan-4-one
Conditions | Yield |
---|---|
In water; acetone for 1h; Ambient temperature; | 94% |
sodium N-methyldithiocarbamate
ethyl 2-chloro-3-oxo-butyrate
ethyl α-(N-methyl)dithiocarbamoylacetoacetate
Conditions | Yield |
---|---|
In water at 15 - 20℃; for 3h; Substitution; | 94% |
sodium N-methyldithiocarbamate
1-methyl-5-mercaptotetrazole
Conditions | Yield |
---|---|
With sodium azide; sodium hydroxide In water at 95℃; for 14h; Temperature; | 93.6% |
sodium N-methyldithiocarbamate
crotonyl chloride
3,6-dimethyl-2-thioxo-[1,3]thiazinan-4-one
Conditions | Yield |
---|---|
In water; acetone for 1h; Ambient temperature; | 90% |
sodium N-methyldithiocarbamate
p-methoxycinnamoyl chloride
6-(4-Methoxy-phenyl)-3-methyl-2-thioxo-[1,3]thiazinan-4-one
Conditions | Yield |
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In water; acetone at 45℃; for 2h; | 88% |
The Metham sodium, with the CAS registry number 137-42-8,is also known as Methylcarbamodithioic acid sodium salt; Sodium monomethyldithiocarbamate. It belongs to the product categories of META - METH;Pesticides&Metabolites. This chemical's molecular formula is C2H4NNaS2 and molecular weight is 129.17.Its EINECS number is 205-293-0. What's more,Its systematic name is Metham sodium. It is a yellow to light yellow-green aqueous solution which is generally used as a broad-spectrum soil fumigant for fungi, bacteria, nematodes and insects.It decomposes, when diluted with water, to methyl isothiocyanate (MITC, a lachrymator) and/or to hydrogen sulfide. It can also decompose to carbon disulfide and monomethylamine if contacted with a strong acid. The decomposition products are flammable and toxic. It is compatible with additional water and strong aqueous acids. In addition, it is corrosive to copper, brass and zinc, and may soften and/or discolor iron. Store it in a cool, dry, locked place out of reach of children. Do not store it below 32 ℉. It crystallizes at lower temperatures.
Physical properties about Metham sodium are:
(1)ACD/LogP: 0.782; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.77; (4)ACD/LogD (pH 7.4): -2.89; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 1.00; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 1; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 0; (12)Flash Point: 26.6 °C; (13)Enthalpy of Vaporization: 35.84 kJ/mol; (14)Boiling Point: 120.3 °C at 760 mmHg; (15)Vapour Pressure: 15.3 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES:[Na+].[S-]C(=S)NC;
(2)Std. InChI:InChI=1S/C2H5NS2.Na/c1-3-2(4)5;/h1H3,(H2,3,4,5);/q;+1/p-1;
(3)Std. InChIKey:AFCCDDWKHLHPDF-UHFFFAOYSA-M.
Safety Information of Metham sodium:
The Metham sodium Contact with acids liberates toxic gas and Causes burns. It may cause sensitization by skin contact.And it is very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.So it should be avoid release to the environment. Refer to special instructions safety data sheet.And this material and/or its container must be disposed of as hazardous waste.When you use it,you should wear suitable protective clothing, gloves and eye/face protection.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
The toxicity data of Metham sodium are as follows:
cat | LDLo | oral | 100mg/kg (100mg/kg) | GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 34(5), Pg. 33, 1969. |
guinea pig | LD50 | oral | 815mg/kg (815mg/kg) | Hygiene and Sanitation Vol. 32(2), Pg. 169, 1967. | |
mouse | LD50 | intraperitoneal | 500mg/kg (500mg/kg) | Farmakologiya i Toksikologiya Vol. 32, Pg. 356, 1969. | |
mouse | LD50 | oral | 50mg/kg (50mg/kg) | Residue Reviews. Vol. 10, Pg. 97, 1965. | |
mouse | LD50 | unreported | 285mg/kg (285mg/kg) | "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 213, 1971. | |
quail | LD50 | unreported | 500mg/kg (500mg/kg) | Farm Chemicals Handbook. Vol. -, Pg. C196, 1991. | |
rabbit | LD50 | oral | 320mg/kg (320mg/kg) | Hygiene and Sanitation Vol. 32(2), Pg. 169, 1967. | |
rabbit | LD50 | skin | 800mg/kg (800mg/kg) | World Review of Pest Control. Vol. 9, Pg. 119, 1970. | |
rat | LD50 | oral | 450mg/kg (450mg/kg) | Farmakologiya i Toksikologiya Vol. 32, Pg. 356, 1969. | |
rat | LD50 | skin | 636mg/kg (636mg/kg) | "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 106, 1982. | |
rat | LD50 | unreported | 550mg/kg (550mg/kg) | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 26(6), Pg. 21, 1982. |