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| CAS No.: | 502-39-6 |
|---|---|
| Name: | 1-cyano-3-(methylmercurio)guanidine |
| Molecular Structure: | |
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| Formula: | C3H6HgN4 |
| Molecular Weight: | 298.697 |
| Synonyms: | 1-cyano-3-(methylmercurio)guanidine;(cyanoguanidinato-κN’)methylmercury;Methylmercuric dicyanamide;METHYLMERCURIC DICYANDIAMIDE; |
| Melting Point: | 156oC |
| Boiling Point: | 131.4°C |
| Solubility: | 21.7g/L(20 oC) |
| Safety: | Poison by ingestion and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of Hg and NOx. See also MERCURY COMPOUNDS, INORGANIC; MERCURY COMPOUNDS, ORGANIC. |
| PSA: | 71.70000 |
| LogP: | 0.50858 |
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Chemistry
The IUPAC name of Methylmercury dicyandiamide (CAS NO.502-39-6):
[(E)-[Amino-(cyanoamino)methylidene]amino]-methylmercury
Synonyms: 1-Cyano-3-(methylmercurio)guanidine ; Methylmercuric dicyanamide ; Panogen 15 ; Cyano(methylmercuric)guanidine ; Mercury,(3-cyanoguanidino)methyl- ; Methylmercurydicyandiamide ; Morsodren ; 3-Cyanoguanidino(methyl)mercury(II)
CAS: 502-39-6
EINECS: 207-935-5
Molecular Formula: C3H6HgN4
Molecular Structure:
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Molecular Weight: 298.69654 g/mol
Uses
The uses of 1-Cyano-3-(methylmercurio)guanidine (CAS NO.502-39-6):
Crystals. Used as a fungicide; a seed, soil, and turf treatment, especially for cereals, sorghum, sugar beets, cotton, and flax. Not registered as a pesticide in the U.S.
Toxicity Data With Reference
The toxicity of Methylmercury dicyandiamide (CAS NO.502-39-6):
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | intraperitoneal | 20mg/kg (20mg/kg) | Acta Medica Scandinavica. Vol. 143, Pg. 365, 1952. | |
| mouse | LD50 | oral | 20mg/kg (20mg/kg) | Pesticide Chemicals Official Compendium, Association of the American Pesticide Control Officials, Inc., 1966. Vol. -, Pg. 735, 1966. | |
| rat | LD50 | intraperitoneal | 13mg/kg (13mg/kg) | BEHAVIORAL: ATAXIA LUNGS, THORAX, OR RESPIRATION: DYSPNEA SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Toxicology and Applied Pharmacology. Vol. 23, Pg. 197, 1972. |
| rat | LD50 | oral | 68mg/kg (68mg/kg) | Acta Poloniae Pharmaceutica Vol. 29, Pg. 623, 1972. | |
| rat | LD50 | unreported | 45mg/kg (45mg/kg) | "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 290, 1971. |
Consensus Reports
Mercury and its compounds are on the Community Right-To-Know List. EPA Extremely Hazardous Substances List.
Safety Profile
Health Hazard:Methylmercury dicyandiamide is extremely toxic to humans. The probable lethal dose for humans is 5-50 mg/kg of body weight (between 7 drops and one teaspoon for a 150 lb. person). Humans may be poisoned by feeding on the flesh of animals which have ingested this fungicide. Eating treated seeds may also cause poisoning. The poisoning may show delayed manifestations on the nervous system. Patients frequently become gradually worse after their illness is recognized and exposure is stopped. 1-cyano-3-(methylmercurio)guanidine is a strong skin irritant and produces blisters and other dermatitis.
Fire Hazard: (Non-Specific -- Mercury-Based Pesticide, n.o.s.) 1-cyano-3-(methylmercurio)guanidine may burn but does not ignite readily. Container may explode in heat of fire. Fire and runoff from fire control water may produce irritating or poisonous gases. When heated to decomposition, 1-cyano-3-(methylmercurio)guanidine emits very toxic fumes of mercury and nitrogen oxides.
Poison by ingestion and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of Hg and NOx. See also MERCURY COMPOUNDS, INORGANIC; MERCURY COMPOUNDS, ORGANIC.
Standards and Recommendations
OSHA PEL: TWA 0.01 mg(Hg)/m3; STEL 0.03 mg/m3 (skin)
ACGIH TLV: TWA 0.01 mg(Hg)/m3 (skin); STEL 0.03 mg(Hg)/m3; BEI: 35 µg/g creatinine total inorganic mercury in urine preshift; 15 µg/g creatinine total inorganic mercury in blood at end of shift at end of workweek.
DFG MAK: Confirmed Animal Carcinogen with Unknown Relevance to Humans
NIOSH REL: (Mercury, Organo) TWA 0.01 mg/m3; STEL 0.03 mg/m3 (skin)