硫酸カリウム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H302：飲み込むと有害

  H315：皮膚刺激

  H319：強い眼刺激

  H335：呼吸器への刺激のおそれ

• 注意書き

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P262：眼、皮膚、衣類につけないこと。

  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。

硫酸カリウム 価格

MSDS Information

• Potassium sulfate

硫酸カリウム 化学特性,用途語,生産方法

• 外観

  白色の結晶

• 定義

  本品は、硫酸(*)のカリウム塩であり、次の化学式で表される。
  参照表示名称：硫酸

• 溶解性

  水に溶けやすく、エタノール及びジエチルエーテルにほとんど溶けない。

• 解説

  硫酸カリウム，無色の斜方晶系結晶．密度2.66 g cm－3．融点1069 ℃，沸点1689 ℃．水100 g に対する溶解度は7.35 g(0 ℃)，24.1 g(100 ℃)．エタノール，アセトン，二硫化炭素に不溶．カリウムミョウバン，ガラス工業の原料，カリ肥料，分析試薬，食品添加物，医薬品として用いられる．
  森北出版「化学辞典（第2版）

• 用途

  高純度金属化合物。

• 用途

  汎用試薬、試液調製原料。

• 用途

  汎用試薬、無機合成原料、調製液原料。

• 用途

  医薬原料、分析試薬

• 用途

  調製液原料、製剤原料。

• 化粧品の成分用途

  親水性増粘剤

• 効能

  口腔洗浄液

• 製造

  硫酸カリウム，天然にはカイナイト，硫酸苦土カリ石などの複硫酸塩として産出する．塩化カリウムと濃硫酸とを熱して得られる．

• 特徴

  SO4四面体とKからなる構造

• 展望

  硫酸カリウムの需要は世界的に増加傾向にあります特に持続可能な農業への関心の高まりと共に環境に優しい肥料としての需要が見込まれています今後も技術の進歩によりより効率的な生産方法や環境への影響をさらに低減する新しい利用方法が開発されることが期待されます

• 特長

  通常の硫酸カリウムは粒子がやや大きく、冷水に溶けるのに時間がかかる。本品は粒子が細かいため溶解速度が速い。

• 使用上の注意

  純度は金属ベースで差数法によって算出したもので、重量又は容量分析等の化学的方法によるものではありません。使用目的により、正確な含量が必要な場合は、それらの方法によって測定する必要があります。

• 説明

  Potassium sulfate (K2SO4) is a kind of chemical compounds that is commonly used in agriculture. The dominant application of potassium sulfate is as a fertilizer, which is commonly applied to offer both potassium and sulfur, thus improving the quality and yield of crops growing in soils that lack an adequate supply of this essential elements. Besides, the crude potassium sulfate is sometimes employed in the production of glass. It also has applications in other industries, which is used as a flash reducer in artillery propellant charges and as an alternative blast media similar to soda in the process of soda blasting.
  
  potassium sulfate powder

• 物理的性質

  Colorless or white crystals or white granules or powder; rhombohedral structure; bitter taste; density 2.66 g/cm³; melts at 1,069°C; vaporizes at 1,689°C; moderately soluble in water, 12 g/100mL at 25°C and 24g/100mL at 100°C; slightly soluble in glycerol; insoluble in alcohol, acetone, and carbon disulfide.

• 天然物の起源

  Potassium and sodium sulfates and their double sulfates with calcium and magnesium occur naturally in various salt lakes. Potassium sulfate also occurs in certain volcanic lava. Its double salt with magnesium occurs in nature, as the mineral langbeinite.
  Potassium sulfate is used in fertilizers as a source of potassium and sulfur, both of which are essential elements for plant growth. Either in sim-ple form or as a double salt with magnesium sulfate, potassium sulfate is one of the most widely consumed potassium salts in agricultural applications. It is preferred over potassium chloride for certain types of crops; such as, tobac-co, citrus, and other chloride-sensitive crops. Some other applications include making gypsum cements; to make potassium alum; in the analysis of Kjeldahl nitrogen; and in medicine.

• 来歴

  Potassium sulfate has been known since the early 14th century. It was studied by Glauber, Boyle, and Tachenius. In the 17th century, it was named arcanuni or sal duplicatum, as it was a combination of an acid salt with an alkaline salt. It was also known as vitriolic tartar and Glaser's salt or sal polychrestum Glaseri after the pharmaceutical chemist Christopher Glaser, who prepared and used it medicinally. From the early to mid-19th century, as understanding of plant nutritional requirements deepened and the fertilizer industry emerged, potassium sulphate began to be produced on a large scale as a vital potash fertiliser.

• 使用

  potassium sulfate is a reagent in cosmetics. Potassium sulfate is an inorganic salt with a primary function as a viscosity-increasing agent.

• 調製方法

  Potassium sulfate is produced by various methods, selection of process depending on availability and cost of raw materials.
  The salt may be obtained from its naturally occurring mineral, langbeinite,K₂SO₄2MgSO₄. The ore first is crushed and washed with water to separate sodium chloride. After that, magnetite is separated from the washed langbei-nite by magnetic separation. After the separation of these two major impuri-ties, the purified double salt is treated with an aqueous solution of potassium chloride to obtain potassium sulfate:
  K₂SO₄2MgSO₄ + 4KCl →3K₂SO₄+ 2MgCl₂
  The solution is filtered to remove insoluble residues and the products are separated from their aqueous mixture by crystallization.
  Potassium sulfate also is produced from the mineral kieserite, MgSO4H₂O by treatment with potassium chloride. The intermediate double salt obtained reacts further with potassium chloride to form potassium sulfate:MgSO₄H₂O + 2KCl + 4H₂O →K₂SO₄MgSO₄6H₂O + MgCl₂
  K₂SO₄MgSO₄6H₂O + 2KCl →2K₂SO₄+ MgCl₂
  Potassium sulfate is separated from the more soluble magnesium chloride by crystallization.
  Also, potassium sulfate can be made by two other processes in which no naturally occurring mineral is employed. In the Mannheim process, the salt is produced by action of sulfuric acid on potassium chloride:2KCl + H₂SO₄→K₂SO₄+ 2HCl
  In Hargreaves process, which is a slight variation of the Mannheim method, potassium sulfate is made by heating a mixture of potassium chlo-ride, sulfur dioxide, air and water:4KCl + 2SO₂+ 2H₂O + o₂→2K₂SO₄+ 4HCl.

• 定義

  Potassium sulfate is a potassium salt and an inorganic potassium salt. It is a white crystalline powder, K2SO4, soluble inwater and insoluble in ethanol;rhombic or hexagonal; r.d. 2.66; m.p.1069°C. It occurs naturally assch nite (Strassfurt deposits) and inlake brines, from which it is separatedby fractional crystallization. Ithas also been produced by the Hargreavesprocess, which involves theoxidation of potassium chloride withsulphuric acid. In the laboratory itmay be obtained by the reaction ofeither potassium hydroxide or potassiumcarbonate with sulphuric acid.Potassium sulphate is used in cements,in glass manufacture, as a food additive, and as a fertilizer(source of K+) for chloride-sensitiveplants, such as tobacco and citrus.

• 安全性

  硫酸カリウムは比較的安全な化学物質とされていますが使用する際には適切な取り扱いが必要です大量に環境に放出された場合土壌や水源を汚染し植物や水生生物に悪影響を及ぼす可能性がありますそのため硫酸カリウムを使用する際には適切な量を正確に計測し環境への影響を最小限に抑えることが重要です

• 一般的な説明

  Potassium sulfate is an inorganic salt that can be prepared by reacting phosphogypsum and potassium chloride. It forms needlelike mullite particles on heating with aluminum sulfate (Al₂(SO₄)₃) and silicon dioxide (SiO₂). Its application to the soil has been reported to minimize the bronzing of rice plants. Its surface integration growth kinetics has been obtained in the temperature range of 20-50°C. The theoretical heat capacity curve of potassium sulfate in vapor phase has been obtained.

• 生産方法

  硫酸カリウムは自然に存在する鉱石から採取される方法と化学的に合成する方法の両方で製造されます自然に存在する方法では硫酸塩とカリウム塩を含む鉱石からこの化合物を抽出します一方化学合成では塩化カリウムKClと硫酸H2SO4を反応させることにより硫酸カリウムが生成されますこの化学反応は適切な温度と圧力の下で行われ副産物として塩化水素HClが発生します

• 安全性プロファイル

  Moderately toxic to humans by ingestion. Moderately toxic experimentally by subcutaneous route. Swallowing large doses causes severe gastrointestinal tract effects. When heated to decomposition it emits toxic fumes of K2O and SOx. See also SULFATES.

• 概要

  硫酸カリウムは化学式K2SO4で表される無機化合物です水に溶けやすい白色または無色の結晶性固体であり主に肥料としての用途で知られています硫酸カリウムは植物の成長に必要なカリウムを供給するため農業分野で広く使用されていますさらに工業的にはガラス製造や医薬品の成分としても利用されます

• 純化方法

  Potassium sulfate [7778-80-5] M 174.3, m 1069o, d 4 2.67 It crystallised from distilled water (4mL/g at 20o; 8mL/g at 100o) between 100o and 0o.

• 参考文献

  https://en.wikipedia.org/wiki/Potassium_sulfate
  http://www.cropnutrition.com/potassium-sulfate
  http://study.com/academy/lesson/what-is-potassium-sulfate-structure-uses-formula.html

• 参考文献

  M.T. Robinson, J. Phys. Chem., 62, 925 (1958), DOI: 10.1021/j150566a007.

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