Topic
Potassium nitrate
About: Potassium nitrate is a research topic. Over the lifetime, 3537 publications have been published within this topic receiving 29450 citations. The topic is also known as: Nitric acid, potassium salt & Saltpeter.
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TL;DR: In this article, the suitability of KNO3 as a dynamic temperature standard for DTA was investigated and the relation between the experimental procedure and the resulting curves was ascertained.
Abstract: Because of questions concerning the suitability of potassium nitrate as a dynamic temperature standard for DTA, the relation between the experimental procedure and the resulting curves was ascertained for the Standard Reference Material KNO3. The material behaves differentlyon cooling in open pans than in cylindrical holders because confinement in the latter case initiates reversion to the room temperature form. Under the conditions of use as a dynamic temperature reference material, the curves are accurately reproducible.
13 citations
Patent•
17 May 2017
TL;DR: In this paper, a high-strength composite salt core material for low-melting-point alloy casting was proposed, which comprises, by mass, 70%-100% of water-soluble inorganic salt and 0%-30% of reinforcement.
Abstract: The invention belongs to the technical field of casting, and particularly relates to a high-strength composite salt core material for low-melting-point alloy casting. The high-strength composite salt core material comprises, by mass, 70%-100% of water-soluble inorganic salt and 0%-30% of a reinforcement, wherein the water-soluble inorganic salt comprises one of low-melting-point salts including potassium nitrate and sodium nitrate, and at least one of high-melting-point salts including potassium chloride, sodium chloride, potassium bromide and sodium bromide, and positive ions of the low-melting-point slats are the same as positive ions of the high-melting-point salts. The invention further discloses a preparation method of a high-strength composite salt core, and an obtained salt core product. The prepared composite salt core has extremely high bending strength, excellent hygroscopicity and small volume shrinkage, and the comprehensive performance is excellent. In addition, the preparation technique of the high-strength composite salt core is simple, raw materials are cheap, and industrial production is easy.
13 citations
Patent•
30 Nov 1999
TL;DR: In this article, a guanidine salt was used in combination with the potassium nitrate to suppress fire suppression in the presence of ammonium nitrate and high burning rates. But the compositions employed in the present invention have low pressure exponents, high burning rate and low flame temperatures.
Abstract: Fire suppressant compositions which are substantially free of ammonium nitrate and which comprise potassium nitrate in an amount sufficient to generate at least about 10 wt. % potassium carbonate when combusted. Most preferably, a guanidine salt, such as guanidine nitrate, is used in combination with the potassium nitrate. The compositions employed in the present invention have low pressure exponents, high burning rates and low flame temperatures.
13 citations
TL;DR: In this paper, the authors describe a method for preparation of PSAN, where the process involves precipitation of ammonium nitrate with potassium nitrate from the aqueous solutions of their salts by the addition of acetone.
Abstract: We describe a method for preparation of PSAN, where the process involves precipitation of ammonium nitrate with potassium nitrate from the aqueous solutions of their salts by the addition of acetone. This kind of process is often referred to as salting out process (Murray and Larson, 1965).
13 citations
TL;DR: In this paper, the authors measured the conductivity of heterogeneous ion exchange membranes and found that the radius of the semicircle of the impedance hodograph is inversely proportional to the diffusion coefficient of a counter ion and directly proportional to fraction of the intergel phase of the membrane.
13 citations