624-92-0 - Names and IdentifiersNameMethyl disulfideSynonymsmdsDMDSYWHAZMGC138156MGC126532Sulfa
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| Adı | Methyl disulfide |
| Eşanlamlar | mds DMDS YWHAZ MGC138156 MGC126532 Sulfa-hitech Methyl disulfide Dimethyldisulfide Methyl disulphide Sulfa-hitech 0382 Dimethyl disulfide disulfuredemethyle Dimethyl disulphide methyldithiomethane (methyldisulfanyl)methane |
| CAS'ın | 624-92-0 |
| EINECS'in | 210-871-0 |
| InChI'nin | InChI=1/C2H6S2/c1-3-4-2/h1-2H3 |
| InChIKey | WQOXQRCZOLPYPM-UHFFFAOYSA-N |
| Moleküler Formül | C2H6S2 |
| Molar Kütlesi | 94.2 |
| Yoğunluk | 1.0625 |
| Erime noktası | -85 °C |
| Boling Point | 109°C(lit.) |
| Flash Point | 76°F |
| JECFA Numarası | 564 |
| Su Solubility | <0.1 g/100 mL at 20 ºC |
| Çözünürlük | 2.7g/l |
| Buhar Basıncı | 22 mm Hg ( 20 °C) |
| Vapor Densitesi | 3.24 (vs air) |
| Görüntü | Liquid |
| Özel Yerçekimi | 1.0647 (20/4℃) |
| Renk | Sarı temizle |
| Maruz kalma sınırı | ACGIH: TWA 0.5 ppm (Skin) |
| BRN | 1730824 |
| Depolama Koşulları | Yanıcı maddeler alanı |
| Kararlılık | Stable. Incompatible with strong bases, strong oxidizing agents, strong reducing agents. Flammable. |
| Patlayıcı Sınır | 1.1-16.1%(V) |
| Kırılma Endeksi | n20/D 1.525(lit.) |
| Fiziksel ve Kimyasal Özellikler | Light yellow transparent liquid. There is a bad smell. melting point -85 ℃ boiling point 109.7 ℃ relative density 1.0625 refractive index 1.5250 solubility insoluble in water, soluble in ethanol, ether, acetic acid was miscible. |
| Kullanım | It is used as a solvent and pesticide intermediate, and is also the main raw material of methanesulfonyl chloride and methanesulfonic acid products. |
| Risk Kodları | R11 - Çok ateşlenebilirPlease take the official translations! You find them here: http: // europa. eu. int/ eur- lex/ lex/ LexUriServ/ LexUriServ. do? uri=CELEX: 32001L0059: EN: HTML R20/22 - Nefes almak ve yutmak zorunda. R36 - Gözleri rahatsız edici R51/53 Su organizmaları için toksik, su ortamında uzun vadeli olumsuz etkilere neden olabilir. R36/37/38 - Gözleri, solunum sistemini ve cildi rahatsız edici. R26 - Very Toxic by inhalation R22 - Yutulduğunda zararlı R36/37 - Irritating to eyes and respiratory system. |
| Güvenlik Açıklaması | S26 - Gözlerle temas halinde hemen bol miktarda suyla durulayın ve tıbbi tavsiye alın. S61 - Çevre serbest bırakmayı engelleyin.Please take the official translations! You find them here: http: // europa. eu. int/ eur- lex/ lex/ LexUriServ/ LexUriServ. do? uri=CELEX: 32001L0059: EN: HTML Özel talimatlara / güvenlik veri çarşaflara bakın. Çek! S45 - Kaza durumunda veya kendinizi iyi hissetmezseniz, hemen tıbbi tavsiye alın (mümkün olduğunda etiketi gösterin). S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S36/37/39 Uygun koruyucu giysiler, eldivenler ve göz/yüz koruyucu giyin. S28A - S16 - Ateşme kaynaklarından uzak tutun. S60 - Bu materyal ve konteynatı tehlikeli kaybı olarak silmeli. S57 - Use appropriate container to avoid environmental contamination. S39 - Göz/yüz koruması giyin. S29 - Do not empty into drains. |
| BM Kimlikleri | UN 2381 3/PG 2 |
| WGK Almanya | 2 |
| RTECS | JO1927500 |
| TSCA'nın | Evet. |
| HS Kodu | 29309070 |
| Tehlike Sınıfı | 3 |
| Paketleme Grubu | II |
| Toksiklik | LD50 orally in Rabbit: 290 - 500 mg/kg |
| Zehirli Materiyaler | Sodium sulfide Sodium sulfide Sulfur(α) Dimethyl sulfate Dimethyl sulfate |
| Aşağıdaki ürünler | Methanesulfonik asit Methanesulfonyl chloride |
in case of acid or high heat decomposition of toxic sulfur oxide gas
| FEMA | 3536 | DIMETHYL DISULFIDE |
| olfactory Threshold | 0.0022ppm |
| LogP'nin | 1.91 at 20℃ |
| zehirli | GRAS(FEMA). |
| kullanım sınırı | FEMA(mg/kg): baked goods 16.9; Frozen dairy products 4.8; Meat products 2.2; soft candy 9.4; Jelly and pudding 8.3; |
| Kullanım | used as solvent and pesticide intermediates, fuel and lubricant additives, coking inhibitors of ethylene cracking furnace and oil refining unit, etc. used as solvents and pesticide intermediates, it is also the main raw material of methanesulfonyl chloride and methanesulfonic acid products. GB 2760-1996 specifies that food brush flavor is allowed to be used. dimethyl disulfide, also known as dimethyl disulfide, is used in the synthesis of the intermediate p-methylthio-m-cresol and p-methylthio-phenol, which is also used as a solvent, purification agent of the catalyst. It is used as a passivating agent for solvent and catalyst, pesticide intermediate, coking inhibitor, etc. Dimethyl disulfide reacts with cresol to form 2-methyl-4-hydroxyanisole, which is then condensed with O,O-dimethylsulfuryl phosphoryl chloride in an alkaline medium to give sesthion. It is a kind of high efficiency and low toxicity organic phosphorus insecticide, which has good control effect on rice borer, soybean borer and fly larvae. It can also be used as a veterinary drug to remove cattle larvae and cattle ticks. |
| üretim yöntemi | from the reaction of dimethyl sulfate and sodium disulfide. Sulfur powder was added into the sodium sulfide solution under stirring, and the temperature was raised to 80-90 ℃, the reaction was 1H, and the temperature was lowered to about 30 ℃. Dimethyl sulfate was dropped into the reaction vessel, and the reaction was continued for 2H, and then distilled, after the waste lye is separated, the product is obtained by distillation. dimethyl disulfide is industrially synthesized by the method of dimethyl sulfate. Na2S → Na2S2Na2S2 (CH3)2SO4 → CH3SSCH3 Na2SO4 put solid sodium sulfide and water into the reaction kettle, heat, control temperature 50~60 ℃, dissolve sodium sulfide, then add equimolar sulfur in batch, keep warm for 1H, cool to 45 ℃, start adding dimethyl sulfate Dropwise, keep the reaction temperature between 40~45 ℃, and keep warm for 1H after adding, the product can be distilled out of dimethyl disulfide. In addition, dimethyl disulfide can also be synthesized by a methyl mercaptan method. results from the reaction of iodomethyl magnesium and disulfide chloride. It is formed by the reaction of disodium disulfide and sodium methyl sulfate. Methyl thiosulfate was prepared by the reaction of methyl bromide and sodium thiosulfate, and then heated. |
| Kategori | flammable liquid |
| zehirli sınıf | yüksek toksiklik |
| Akut toksisite | inhalation-rat LC50:16 mg/m3/2 hours; Inhalation-mouse LC50:12 mg/m3/2 h |
| yanılabilirlik tehlike özellikleri | in case of fire, high temperature, oxidant flammable; |
| depolama ve taşıma özellikleri | The warehouse is ventilated and dried at low temperature; Stored separately from oxidants and acids |
| söndürme ajanı | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| spontan yanma sıcaklığı | 304°C |
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