황산칼륨

황산칼륨 속성

황산칼륨 MSDS

Potassium sulfate

황산칼륨 C화학적 특성, 용도, 생산

물성

녹으며, 알코올․아세톤․이황화탄소 등에는 녹지 않는다. 칼륨비료로 사용되고 냄새가 거의 없어 각종 비료와 배합시킬 수 있다. 비료 효과가 빨리 나타나며, 황산암모늄․과산화인산 등과 함께 기본적인 비료이다. 또, 비료 외의 용도로 칼륨백반․브롬화칼륨의 제조원료나 의약품에 이용된다.

개요

천연적으로는 아르카나이트로 산출되고, 공업적으로는 염화칼륨 KCl을 진한황산 HSO과 함께 가열하여 얻는다. 칼륨비료로 사용되는 외에, 거의 냄새가 없어 각종비료와 배합시킬 수 있다. 비효는 속효성이며, 황산암모늄·과인산 등과 함께 기비가 된다. 또 칼륨백반·브롬화칼륨의 제조원료나 의약품에 이용된다.

용도

공업적으로는 카이나이트 등에 염화칼륨을 가한 수용액에서 복분해하여 얻는다. 물에서 재결정시켜 정제한다. 칼륨비료로 사용되고 냄새가 거의 없어 각종 비료와 배합시킬 수 있다. 비료 효과가 빨 리 나타나며, 황산암모늄 ·과산화인산 등과 함께 기본적인 비료이다. 또, 비료 외의 용도로 칼륨백반 ·브롬화칼륨의 제조원료나 의약품 에 이용된다.

순도시험

  (1) 납 : 「메타인산나트륨」의 순도시험 (2)에 따라 시험한다(2.0ppm 이하).

  (2) 비소 : 이 품목을 비소시험법에 따라 시험할 때, 그 양은 4.0ppm 이하이어야 한다.

  (3) 수은 : 이 품목을 수은시험법에 따라 시험할 때, 그 양은 1.0ppm 이하이어야 한다.

  (4) 셀레늄 : 이 품목 1g을 물 100mL에 녹인 것을 시험용액으로 하여 원자흡광도법의 무염방식에 따라 측정할 때의 흡광도는 셀레늄표준용액 3mL에 물을 가한 다음 100mL로 한 액을 시험용액과 같은 조작을 하여 얻은 흡광도보다 높아서는 아니 된다(30ppm 이하).

확인시험

  이 품목의 수용액(1→10)은 확인시험법 중 칼륨염의 반응을 나타낸다.

정량법

  이 품목 약 0.5g을 정밀히 달아 물 200mL에 녹이고 이에 염산 1mL를 가하여 끓인다. 계속 저어주면서 뜨거운 염화바륨시액 8～9mL를 천천히 가한 후 수욕상에서 1시간 가열하고 식힌 다음 회분이 없는 여과지로 여과하고 씻은 액이 염화물의 반응을 나타내지 않을 때까지 씻은 다음 그 침전물을 조심스럽게 탄화한 다음 항량이 될 때까지 800±25℃에서 강열하여 황산바륨으로서 평량한다.

개요

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

화학적 성질

Potassium sulfate,K2804, also known as salt of Lemery and arcanite, is a colorless crystalline solid that melts at 1072°C(1960 OF). It is soluble in water,but insoluble in alcohol. Potassium sulfate is used in manufacturing glass, aluminum, fertilizers, and in medicine.

물리적 성질

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.

출처

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.

용도

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

정의

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.

생산 방법

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,K₂SO₄?2MgSO₄. 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:
K₂SO₄?2MgSO₄ + 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, MgSO4?H₂O by treatment with potassium chloride. The intermediate double salt obtained reacts further with potassium chloride to form potassium sulfate:MgSO₄?H₂O + 2KCl + 4H₂O →K₂SO₄?MgSO₄?6H₂O + MgCl₂
K₂SO₄?MgSO₄?6H₂O + 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.

일반 설명

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.

Safety Profile

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.

Purification Methods

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.

참고 문헌

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

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Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
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Jiangsu Kolod Food Ingredients Co.,Ltd.	+86-518-85110578 +8618805133257	sales3257@jskolod.com	China	132	60
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
Hebei Guanlang Biotechnology Co., Ltd.	+86-19930503282	alice@crovellbio.com	China	8823	58
Xiamen AmoyChem Co., Ltd	+86-592-6051114 +8618959220845	sales@amoychem.com	China	6387	58
Chongqing Chemdad Co., Ltd	+86-023-61398051 +8613650506873	sales@chemdad.com	China	39916	58

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