Tetramethylthiuram disulfide
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Tetramethylthiuram disulfide
structure -
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CAS No:
137-26-8
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Formula:
C6H12N2S4
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Chemical Name:
Tetramethylthiuram disulfide
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Synonyms:
Thioperoxydicarbonic diamide ([(H2N)C(S)]2S2),N,N,N′,N′-tetramethyl-;Disulfide,bis(dimethylthiocarbamoyl);Thioperoxydicarbonic diamide ([(H2N)C(S)]2S2),tetramethyl-;SQ 1489;Accelerator Thiuram;Aceto TETD;Arasan M;Arasan;Arasan-SF;Bis(dimethylthiocarbamoyl) disulfide;Bis(dimethylthiocarbamyl) disulfide;Fernasan;Fernasan A;Hermal;Heryl;Mercuram;Methyl Thiram;Normersan;Panoram 75;Pomarsol;Pomasol;Puralin;Rezifilm;Royal TMTD;Spotrete;Tersan;Tetramethylthiuram bisulfide;N,N,N′,N′-Tetramethylthiuram disulfide;Tetramethylthiuram disulphide;Tetramethylthiuram disulfide;Thiosan;Thiram;Thiram 75;Thiurad;Thiuram;Thiuram M;Thiuram disulfide,tetramethyl-;Thiuramyl;Tiuramyl;TMTD;TMTDS;Thylate;Tridipam;Tuads;Tulisan;Arasan 75;Fernide;Kregasan;Polyram ultra;Sadoplon;Tetrasipton;Thiulin;Tripomol;VUAgT-I-4;Thiuram D;Thiotox;Thillate;Arasan 42S;Thirasan;Arasan 70;Ekagom TB;Nobecutan;Vulcafor TMTD;Vulkacit Th;Sadoplon 75;Accelerator T;Trametan;Hexathir;Zaprawa Nasienna T;Aatiram;Thiram 80;Vulcafor TMT;Vulkacit thiuram;Hermat TMT;Thiram B;AApirol;Atiram;Falitiram;Formalsol;Thioscabin;Arasan 70-S Red;Tutan;Accel TMT;Tyradin;Tersan 75;Pol-Thiuram;TMT;TUEX;Tigam;Rhenogran TMTD;Metiurac;Nocceler TT;Rhodiauram;Thiotox (fungicide);Accelerant T;Ferna-Col;Methyl Tuads;Arasan 50 red;Radothiram;Radotiram;Thiride;Thiuram TMTD;Tetramethylthioperoxydicarbonic diamide;Zupa S 80;Betoxin;Robac TMT;Pomarsol Forte;12680-07-8;12680-62-5;39456-80-9;56645-31-9;66173-72-6;92481-09-9;93196-73-7;200889-05-0;1135443-08-1;2213445-87-3
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CAS No:
Description
Colorless to yellow, crystalline solid with a characteristic odor. [Note: Commercial pesticide products may be dyed blue.]
Characteristics
121
1.7
Thiram appears as a liquid solution of a white crystalline solid. Primary hazard is to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrates the soil to contaminates groundwater and waterways.
1.29 g/cm3 @ Temp: 20 °C
155-156 °C
129 °C @ Press: 20 Torr
89°C
1.677
H2O: 16.5 mg/L (20 ºC)
0-6°C
0.000008 mmHg
Oral-rat LD50: 560 mg/kg; Oral-Mouse LD50: 1250 mg/kg
Thermal decomposition of toxic nitrogen oxide and sulfur oxide gases
Characteristic odor
Safety Information
III
9
UN 2771/2811
3
20/22-36/38-43-48/22-50/53
26-36/37-60-61
JO1400000
Xn,N
The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials
Decomposed in acidic media. Some deterioration on prolonged exposure to heat, air or moisture. DT50 (est.) (22 deg C) 128 days (pH 4), 18 days (pH 7), 9 hr (pH 9).
P201, P202, P260, P261, P264, P270, P271, P272, P273, P280, P281, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P314, P321, P330, P332+P313, P333+P313, P337+P313, P362, P363, P391, P405, P501
H302
Tetramethylthiuram disulfide Use and Manufacturing
Preparation of sodium fumarate Dimethylamine hydrochloride and carbon disulfide form sodium dimethylaminodithioformate (sodium fumarate) in the presence of sodium hydroxide. The reaction temperature is 50-55°C and the pH is 8-9. Preparation of Fomethine Fomethine (or Fomethine) and hydrogen peroxide in the presence of sulfuric acid to form Fomethion, the temperature is controlled below 10 ℃, the end point pH value is 3-4. Chlorine gas can also be used instead of hydrogen peroxide and sulfuric acid. The reaction is carried out in a sieve tray tower. Chlorine gas enters from the bottom of the tower after dilution, and the top of the tower is sprayed with a 5% formaldehyde sodium solution. This is called the chlorine-air oxidation method. Sodium nitrite oxidation or electrolytic oxidation can also be used.
It is a broad-spectrum protective fungicide with a residual effect of about 7 days. It is mainly used to treat seeds and soil, prevent and cure powdery mildew, smut of cereal crops, and rice seedling wilt. It can also be used for some fruit tree and vegetable diseases. If 500g of 50% wettable powder is used to dress seeds, it can prevent rice blast, rice flax leaf spot, barley and wheat smut.
Computed Properties
Molecular Weight:240.4
XLogP3:1.7
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:3
Exact Mass:239.98833309
Monoisotopic Mass:239.98833309
Topological Polar Surface Area:121
Heavy Atom Count:12
Complexity:158
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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