Biomet 33
Methyl isothiocyanate
CAS: 556-61-6
Molecular Formula: C2H3NS
Biomet 33 - Names and Identifiers
| Name | Methyl isothiocyanate |
| Synonyms | MTC wn12 WN 12 MENCS Trapex Vortex Biomet 33 vorlex201(nor-am) Methyl mustard oil Methyl isothiocyanate Isothiocyanatomethane Degussa methyl isothiocyanate METHYL-ISO-THIOCYANATE PESTANAL, 250 MG |
| CAS | 556-61-6 |
| EINECS | 209-132-5 |
| InChI | InChI=1/C2H3NS/c1-3-2-4/h1H3 |
| InChIKey | LGDSHSYDSCRFAB-UHFFFAOYSA-N |
Biomet 33 - Physico-chemical Properties
| Molecular Formula | C2H3NS |
| Molar Mass | 73.12 |
| Density | 1.069g/mLat 25°C(lit.) |
| Melting Point | 30-34°C(lit.) |
| Boling Point | 117-118°C(lit.) |
| Flash Point | 90°F |
| JECFA Number | 1884 |
| Water Solubility | 7.6 g/L |
| Solubility | H2O: slightly soluble |
| Vapor Presure | 21 mm Hg ( 20 °C) |
| Appearance | Low Melting Solid |
| Color | White to pale yellow |
| Merck | 14,6092 |
| BRN | 605319 |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with strong oxidizing agents, alcohols, strong bases, amines. |
| Sensitive | Moisture Sensitive |
| Refractive Index | nD37 1.5258 |
| Physical and Chemical Properties | Colorless crystals. The melting point is 36 ℃, the boiling point is 119 ℃, the relative density is 1.0691(37/4 ℃), the refractive index is 1.5258(37 ℃), and the flash point is 32 ℃. Soluble in ethanol, ether, water-soluble. |
| Use | Sterilizing soil fumigant, before planting crops to kill fungi, nematodes, underground pests and weeds in the soil of the seed, also is the active substance of cotton Dragon, Wei hundred mu |
Biomet 33 - Risk and Safety
| Risk Codes | R23/25 - Toxic by inhalation and if swallowed. R34 - Causes burns R43 - May cause sensitization by skin contact R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 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. |
| UN IDs | UN 2477 6.1/PG 1 |
| WGK Germany | 3 |
| RTECS | PA9625000 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| HS Code | 29309090 |
| Hazard Class | 6.1 |
| Packing Group | I |
| Toxicity | LD50 in rats, mice (mg/kg): 220, 110 orally; in rabbits (mg/kg): 33 dermally (Vernot); LD50 s.c. in mice: 0.05 g/kg (Klesse, Lukoschek) |
Biomet 33 - Reference Information
| FEMA | 4426 | METHYL ISOTHIOCYANATE |
| LogP | 1.3 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used as pesticide insecticide (ie diactinide, or cyanide), military poison. Inbiotic soil fumigant kills fungi, nematodes, underground pests and weed seeds in the soil before crop planting. It is also the active substance of Mianlong and Weibaimu |
| Production method | Using monomethylamine, carbon disulfide and ethyl chloroformate as raw materials, it is prepared by the following steps. The carbon disulfide and sodium hydroxide solution were mixed, stirred and cooled to 10-15 ℃, and 35% methylamine aqueous solution was added within 0.5h. Warm stirring for 1-2h makes the reaction complete and produces a bright red solution. Cool it to 35-40 ℃, add ethyl chloroformate dropwise under stirring, continue stirring for 30min after adding, and the temperature drops to about 30 ℃. The upper isothiocyanate is separated, dried with anhydrous sodium sulfate and fractionated, and the 115-121 ℃ fraction is collected as the finished product. The yield is about 70%. |
| category | flammable liquid |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 72 mg/kg; Oral-mouse LD50: 90 mg/kg |
| stimulation data | skin-rabbit 500 mg/24 hours moderate; Eye-rabbit 100 mg severe |
| flammability hazard characteristics | flammability; thermal decomposition of toxic cyanide and sulfide |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from oxidant storage and transportation |
| fire extinguishing agent | dry powder, carbon dioxide; 1211; Foam |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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