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| CAS No.: | 137-26-8 |
|---|---|
| Name: | Tetramethylthiuram Disulfide |
| Molecular Structure: | |
|
|
|
| Formula: | C6H12N2S4 |
| Molecular Weight: | 240.439 |
| Synonyms: | Rubber Accelerator;Thioperoxydicarbonicdiamide ([(H2N)C(S)]2S2), N,N,N',N'-tetramethyl-;Disulfide,bis(dimethylthiocarbamoyl) (8CI);AApirol;Aatiram;Accel TMT;Accel TT;Accelerator Thiuram;Anles;Arasan 50 red;Arasan 70-S Red;Arasan M;Cunitex;Fernide;NSC 49512;Orac TMTD;Oricel TT;Rhenogran TMTD;Robac TMT;SQ 1489;Sadoplon 75;Tersan;Thiram 75;Thiram 80;Thiulin;Thiuram MDP;Thiuram disulfide, tetramethyl-;Thiuramyl;Tirama;Tiuramyl;Tripomol;Tuads;Tutan;Rubber Accelerator TMTD (TT); |
| EINECS: | 205-286-2 |
| Density: | 1.335 g/cm3 |
| Melting Point: | 156-158 °C(lit.) |
| Boiling Point: | 307.4 °C at 760 mmHg |
| Flash Point: | 139.7 °C |
| Solubility: | Water Solubility: 16.5 mg/L at 20 °C |
| Appearance: | white to off white powder |
| Hazard Symbols: |
 Xn, N
|
| Risk Codes: | 20/22-36/38-43-48/22-50/53 |
| Safety: | 26-36/37-60-61 |
| Transport Information: | UN 2771/2811 |
| PSA: | 121.26000 |
| LogP: | 2.06080 |
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Chemistry
Molecular Structure of Tetramethylthiuram disulfide (CAS NO. 137-26-8):
IUPAC Name: Dimethylcarbamothioylsulfanyl N,N-dimethylcarbamodithioate
Molecular Formula: C6H12N2S4
Molecular Weight: 240.432880 g/mol
Index of Refraction: 1.677
Molar Refractivity: 67.86 cm3
Molar Volume: 179.9 cm3
Surface Tension: 67.8 dyne/cm
Density: 1.335 g/cm3
Flash Point: 139.7 °C
Enthalpy of Vaporization: 54.8 kJ/mol
Boiling Point: 307.4 °C at 760 mmHg
Vapour Pressure: 0.000726 mmHg at 25 °C
Melting Point: 156-158 °C(lit.)
Water Solubility: 16.5 mg/L at 20 °C
Storage Temp.: 0-6 °C
BRN: 1725821
EINECS: 205-286-2
Product Categories: Rubber Chemicals;Flame retardants;Organics;FUNGICIDE
Uses
Thiram is an ectoparasiticide. Thiram is used in agriculture to prevent fungal diseases in seed and crops. Thiram has other applications ranging from use as a topical bactericide to animal repellent.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 300mg/kg (300mg/kg) | Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983. | |
| cat | LDLo | oral | 230mg/kg (230mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BEHAVIORAL: ATAXIA BEHAVIORAL: ANALGESIA | Journal of Pharmacology and Experimental Therapeutics. Vol. 17, Pg. 349, 1921. |
| chicken | LD50 | unreported | 840mg/kg (840mg/kg) | Veterinariya. Veterinary Science. Vol. 54(2), Pg. 70, 1978. | |
| domestic animals - goat/sheep | LD50 | unreported | 225mg/kg (225mg/kg) | Veterinariya. Veterinary Science. Vol. 54(2), Pg. 70, 1978. | |
| human | TCLo | inhalation | 30ug/m3/5Y-I (0.03mg/m3) | SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE CARDIAC: OTHER CHANGES LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI | Vrachebnoe Delo. Medical Practice. Vol. (10), Pg. 136, 1971. |
| mammal (species unspecified) | LD50 | unreported | 400mg/kg (400mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 45(5), Pg. 29, 1980. | |
| mouse | LD50 | intraperitoneal | 70mg/kg (70mg/kg) | Drugs in Japan Vol. 6, Pg. 566, 1982. | |
| mouse | LD50 | oral | 1250mg/kg (1250mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 6(7), Pg. 28, 1962. |
| mouse | LD50 | subcutaneous | 1109mg/kg (1109mg/kg) | Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 15, Pg. 507, 1990. | |
| mouse | LD50 | unreported | 1150mg/kg (1150mg/kg) | Kobunshi Kako. Polymer Applications. Vol. 26, Pg. 358, 1977. | |
| rabbit | LD50 | oral | 210mg/kg (210mg/kg) | Kobunshi Kako. Polymer Applications. Vol. 26, Pg. 358, 1977. | |
| rabbit | LD50 | unreported | 210mg/kg (210mg/kg) | Veterinariya. Veterinary Science. Vol. 54(2), Pg. 70, 1978. | |
| rabbit | LDLo | skin | 1gm/kg (1000mg/kg) | "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 110, 1982. | |
| rat | LC50 | inhalation | 500mg/m3/4H (500mg/m3) | "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1027, 1986. | |
| rat | LD50 | intraperitoneal | 138mg/kg (138mg/kg) | BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) | Journal de Pharmacologie. Vol. 9, Pg. 35, 1978. |
| rat | LD50 | oral | 560mg/kg (560mg/kg) | Toxicology and Applied Pharmacology. Vol. 11, Pg. 546, 1967. | |
| rat | LD50 | subcutaneous | 646mg/kg (646mg/kg) | Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 15, Pg. 507, 1990. | |
| rat | LD50 | unreported | 740mg/kg (740mg/kg) | Kobunshi Kako. Polymer Applications. Vol. 26, Pg. 358, 1977. | |
| rat | LDLo | skin | 5gm/kg (5000mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) | Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 15(Suppl, |
Safety Profile
Safety Information of Tetramethylthiuram disulfide (CAS NO. 137-26-8):
Hazard Codes: Xn 
,N 
Risk Statements: 20/22-36/38-43-48/22-50/53
R20/22:Harmful by inhalation and if swallowed
R36/38:Irritating to eyes and skin
R43:May cause sensitization by skin contact
R48/22:Harmful: danger of serious damage to health by prolonged exposure if swallowed
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements: 26-36/37-60-61
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36/37:Wear suitable protective clothing and gloves
S60:This material and its container must be disposed of as hazardous waste
S61:Avoid release to the environment. Refer to special instructions / safety data sheets
RIDADR: UN 2771/2811
WGK Germany: 3
RTECS: JO1400000
HazardClass: 9
PackingGroup: III
HS Code: 29303000
Specification
Tetramethylthiuram disulfide with cas registry number of 137-26-8 is white to almost white powder, also called Disulfide, bis(dimethylthiocarbamoyl) ; Thioperoxydicarbonic diamide (((H2N)C(S))2S2), N,N,N',N'-tetramethyl- ; Thioperoxydicarbonic diamide (((H2N)C(S))2S2), tetramethyl- ; Thiram ; RCRA waste no. U244 . It is incompatible with oxidizing materials, strong acids, strong alkalis and nitrating agents. Tetramethylthiuram disulfide is always used for rice, wheat, TOBACCO, sugar beet, grapes and other crop diseases and pests, and it also can be used for seed dressing and soil treatment.