ナック

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H260：水に触れると自然発火するおそれのある可燃性 /引火性ガスを発生

  H314：重篤な皮膚の薬傷?眼の損傷

• 注意書き

  P223：激しい反応と火災の発生の危険があるため、水と接 触させないこと。

  P231+P232：湿気を遮断し、不活性ガス下で取り扱うこと。

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P303+P361+P353：皮膚（または髪）に付着した場合：直ちに汚染された衣 類をすべて脱ぐこと/取り除くこと。皮膚を流水/シャワー で洗うこと。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

ナック 価格

ナック 化学特性,用途語,生産方法

• 使用

  Alternative to other reagents for desulfurizations, dehalogenations(as Wurtz coupling reactions), and Birch reductions.
  
  Additionally can be used as:
  
  • A reducing agent for aliphatic ester substrates
  • A deprotectant in place of the typical heavy metal deprotectant

• 主な応用

  Sodium-Potassium Alloy is used for preparation of organopotassium compounds; in combination with TMSCl, greatly enhances acyloin condensations; dehalogenation of dihalides; preparation of γ, δ-unsaturated alcohols via fragmentation of γ-halo ketones; in combination with crown ethers is a useful reducing agent for alkynes and alkyl fluorides.

• 製造方法

  Sodium-Potassium Alloy can be prepared by mixing 1 part Sodium and 5 parts Potassium (by weight) in refluxing xylene until melted. The melt is then carefully mixed with a glass stirring rod, keeping the alloy in one large globule. Upon cooling to room temperature, the alloy will remain liquid and can easily be transferred via a glass pipet.^[1]

• 安全性プロファイル

  A low-melting alloy of Na and K. Its toxicity is due to either Na or K alone. Corrosive to the eyes, skin, and mucous membranes. Upon contact with moisture it reacts violently to evolve H2; much heat; and a highly caustic residue of NaOH or KOH. Oxidation forms Na2O and K2O, whch are powerful caustics. A dangerous fire and explosion hazard. Violent or explosive reaction with O2, water, moisture, steam, halogens, oxidzers, acids or acid fumes, gving off much heat, hydrogen, toxic and corrosive fumes, often spattering either red-hot particles or actually flaming particles. A severe explosion hazard, wiU react explosively under the appropriate condtions with moisture, acids, acid fumes, solid CO2, carbon disulfide, halocarbons (e.g., CH3Cl, carbon tetrachloride, chloroform, bromoform,1,1,1- trichloroethane, 1,1,2- trichlorotrifluoroethane, tetrachloroethane, CH2Cl2, CH2l2), ammonium sulfate + NH4 + No3, HgO, metal halides (e.g., silver halides, zinc chloride, iron(Ⅲ) chloride), metal oxides (e.g., silver oxide, mercury oxide), nitrogen-containing explosives (e.g., ammonium nitrate, ammonium sulfate, picric acid, nitrobenzene), oxalyl bromide, oxalyl chloride, pentachloroethane, K oxides, KO2, Si, NaHCO3, polytetrafluoroethylene. Reacts vigorously with oxidizing materials. To fight fire, use G-1 powder, dry sodum chloride, dry sodium carbonate, dry calcium carbonate, dry sand, resin-coated sodium chloride, or dry soda ash. Never use water, graphite, carbon dioxide, halocarbons, or foam. Dangerous; when heated it emits highly toxic fumes of Na2O and K2O. Used as a liquid coolant for nuclear reactor cores. See also SODIUM and POTASSIUM.

ナック 生産企業

Global(27)Suppliers

11135-81-2, ナック キーワード