• 原料直供
• 试剂商城
• 直接询价

分类

• {SNA} Acetals/Ketals/Ortho Esters, Alphabetical
• {SNA} A-F, Alcoholic & Nonalcoholic Beverages, Alpha Sort, Alphabetical Index of Analytical Standards, Analytical Standards, Brandy & Cognac, Chromatography, E-L, Environmental Standards, F, FM - FZ,
• {SNA} Acetals/Ketals/Ortho Esters,

产品应用

• 主要用于生产阴离子效换树脂，也作溶剂和特种燃料。

相关文献及参考

• Formaldehyde equivalent and low-toxicity solvent for non-acidic materials.
• Short: II/27B
• Merck:14,6012
• Can be used in combination with n-hexanoyl chloride for the generation of chloromethyl methyl ether (caution!): J. Org. Chem., 59, 6499 (1994).
• Short: II/25C
• Has also been used to protect diols as their methylene acetals, using TMS-OTf/2,6-lutidine: Tetrahedron Lett., 26, 4639 (1985), or LiBr/TsOH: Tetrahedron Lett., 28, 6601 (1987).
• In combination with P2O5, protects alcohols as their methoxymethyl (MOM) ethers, usually preferable to methods using carcinogenic methoxymethyl halides: Synthesis, 276 (1975); Org. Synth. Coll., 9, 539 (1998). The MOM group is more effective than the methoxy group in the activation of aromatics to lithiation: Synthesis, 906 (1979). Alternative agents for promoting this acetal exchange include: BF3 etherate and 4A sieves: Org. Synth. Coll., 9, 704 (1998); tosic acid and molecular sieves: Synthesis, 244 (1976) or LiBr: Synthesis, 74 (1985), or tosic acid itself: Org. Prep. Proced. Int., 22, 63 (1990); Iodotrimethyl­silane, A12902: Synthesis, 896 (1983); montmorillonite K 10: Indian J. Chem. B., 35B, 260 (1996); see also Scandium(III)­ trifluoromethanesulfonate hydrate, 40566. The MOM group is readily cleaved with mild acid, e.g. HCl: J. Chem. Soc., Chem. Commun., 298 (1974); J. Org. Chem., 40, 2025 (1975), PPTS: Synth. Commun., 13, 1021 (1983), TFA: J. Am .Chem. Soc., 103, 3210 (1981), Dowex 50WX2 resin: Synth. Commun., 22, 2823 (1983).

安全信息

GHS Symbol

TYPE OF TEST            : LD - Lethal dose
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : >16 mL/kg
TOXIC EFFECTS :
   Sense Organs and Special Senses (Eye) - iritis
   Lungs, Thorax, or Respiration - other changes
   Liver - other changes
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0536049

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 5 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0524346

TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 15000 ppm
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National
   Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair
   Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015)
   Volume(issue)/page/year: 1,73,1974

TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 57 gm/m3/7H
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J.,
   Prague, Czechoslovakia, Avicenum, 1986  Vol

其他信息

• 方法一:在浓硫酸催化下，甲醇和甲醛在合成塔中反应。生成的甲缩醛从塔丁馏出，塔丁温度控制在41.5-42℃，从产物中分离未反应的甲醇供循环使用，得含量为85%以上的甲缩醛。每吨产品消耗甲醇1100kg，37%的甲醛1300kg。产品甲缩醛中的杂质主要是甲醇和甲醛，当要求较高纯度时，可用碱性过氧化氢氧化除去甲醛，加金属钠蒸馏可除去甲醇。
• 二甲醇缩甲醛价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2011/08/23 LA1205502 二甲氧基甲烷 500ml 241元 2011/04/16 D0637 二甲氧基甲烷 Dimethoxymethane 25ML 117元 2011/04/16 D0637 二甲氧基甲烷 Dimethoxymethane 500ML 356元
• 有氯仿气味和刺激味。水中溶解度:32.3 G/100 ML (16°C)，和醇、醚、油、烃混溶，和大多数常规有机溶剂混溶；极易溶于丙酮和苯。
• Sigma Aldrich:109-87-5(sigmaaldrich)
• 毒性分级:低毒
• 下游产品:甲醛 --> 啶虫脒 --> ALPHA-溴-4-硝基-O-甲酚 --> 地红霉素 --> 1,3-二噻烷
• 用途三:主要用于生产阴离子效换树脂，也作溶剂和特种燃料。
• 职业标准:TLV-TWA 3100毫克/立方米; STEL 3900毫克/立方米
• 爆炸物危险特性:与空气混合形成爆炸性混合物
• 外观性质:无色液体，有类似氯仿的气味。
• Acros Organics:二甲氧基甲烷/甲缩醛 Dimethoxymethane, 99.5+%(109-87-5)
• 急性毒性:吸入-大鼠 LC50: 47 克/立方米; 吸入-小鼠 LC50: 57 克/立方米/7小时
• 类别:易燃液体
• 图谱信息:二甲醇缩甲醛(109-87-5)核磁图( 13 CNMR) 二甲醇缩甲醛(109-87-5)质谱(MS) 二甲醇缩甲醛(109-87-5)核磁图( 1 HNMR) 二甲醇缩甲醛(109-87-5)Raman光谱 二甲醇缩甲醛(109-87-5)红外图谱(IR1)
• 可燃性危险特性:; 火场释放辛辣刺激烟雾
• Alfa Aesar:二甲氧基甲烷,98% Dimethoxymethane, 98%(109-87-5)
• MOL 文件:109-87-5.mol
• 上游原料:甲醇 --> 钠 --> 过氧化氢 --> 甘氨酸 --> 多聚甲醛
• 灭火剂:干粉, 泡沫, 二氧化碳, 1211
• 用途一:用于生产阳离子交换树脂和溶剂等
• 刺激数据:眼睛-兔 0.1 毫升 中度
• 敏感性:Moisture Sensit
• F:21
• MSDS 信息:二甲氧基甲烷(109-87-5).msds
• 用途二:主要用于生产阴离子效换树脂，也作溶剂和特种燃料。其溶解能力比乙醚、丙酮强，和甲醇和共沸混合物能溶解含氮量高的硝化纤维素。但由于其蒸气有较强麻醉性，不宜作一般溶剂使用，通常作特殊声合的溶剂。还用于香料制造、生产人造树脂，用作格利雅反应和雷帕（合成）反应的反应介质。
• 储运特性:库房通风低温干燥; 与氧化剂, 酸类分开储运存放
• 产品特性:甲缩醛(109-87-5)具有优良的理化性能，即良好的溶解性、低沸点、与水相溶性好，能广泛应用于化妆品、药品、家庭用品、工业汽车用品、杀虫剂、皮革上光剂、清洁剂、橡胶工业、油漆、油墨等产品中，也由于甲缩醛(109-87-5)具有良好的去油污能力和挥发性，作为清洁剂可以替代F11和F113及含氯溶剂，因此是替代氟里昂，减少挥发性有机物（VOCs）排放，降低对大气污染的环保产品。
• TCI Shanghai:二甲氧基甲烷 Dimethoxymethane,>;98.0%(GC)(109-87-5)