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.

Use of a ternary mixture of salts as a heat transmitting medium and/or as a heat storage medium.

Abstract: A ternary salt mixture of calcium nitrate Ca(NO3)2, with or without water of crystallisation, potassium nitrate KNO3 and sodium nitrate NaNO3 is used. A preferred composition is 44% by weight of calcium nitrate Ca(NO3)2, 44% by weight of potassium nitrate KNO3 and 12% by weight of sodium nitrate NaNO3. A further preferred composition is 53% by weight of calcium nitrate with water of crystallisation, Ca(NO3)2 x 4 H2O, 37% by weight of potassium nitrate KNO3 and 10% by weight of sodium nitrate NaNO3. Preferred uses are in the vulcanisation of vulcanisable articles, for heat transfer in pipes and tubes and for heat storage.

The hydrolysis of metal ions. Part 4. Indium(III)

Abstract: The hydrolysis of indium(III) has been investigated by potentiometric titration at 25 °C in 0.10 mol dm–3 potassium nitrate. Data treatment by our version of MINIQUAD has shown the ‘best’ model to be [In(OH)]2+,[In(OH)2]+, and [Inp(OH)p]2p+; the –log βpq values for these species are estimated to be 4.31 (0.003), 9.35 (0.01), and 7.32 (0.006)(p= 4) or 9.12 (0.009)(p= 5) respectively, the estimated standard deviations being given in parentheses.

Mixed molten salt as heat transfer and storage medium low in melting point

Abstract: The invention relates to a formula of a mixed molten salt for medium-high temperature heat transfer and storage, and belongs to the physical heat transfer and energy storage technology in innovative and high technologies. The mixed molten salt comprises components in a ratio as follows: 10wt% of calcium nitrate, 60-70 wt% of potassium nitrate, 10-20 wt% sodium nitrate and 10wt% of sodium nitrite; the melting point of the mixed molten salt is about 130 DEG C, which is reduced by nearly 90 DEG C relative to solar salt and is reduced by about 15 DEG C relative to Hitec salt; and the thermal decomposition temperature thereof reaches above 650 DEG C. Sodium nitrate in the molten salt is changed into lithium nitrate, and the specific component ratio is as follows: 18-20wt% of calcium nitrate, 50-55 wt% of potassium nitrate, 9-10 wt% sodium nitrate and 18-20wt% of sodium lithium nitrate; after the component ratio is changed, the melting point of the mixed molten salt is about 90 DEG C, which is reduced by nearly 130 DEG C relative to the solar salt and is reduced by about 50 DEG C relative to the Hitec salt; and the thermal decomposition temperature thereof reaches above 600 DEG C. 10wt% of sodium carbonate is added continuously, then the melting point is raised to about 110 DEG C, while the decomposition temperature is raised by nearly 20 DEG C.

Effect of sucrose and potassium nitrate on biomass and saponin content of Talinum paniculatum Gaertn. hairy root in balloon-type bubble bioreactor

Abstract: Objective To increase biomass and saponin production in hairy root culture of Talinum paniculatum Gaertn. ( T. paniculatum ) in balloon-type bubble bioreactor (BTBB). Methods Hairy roots which were collected from leaf explants of T. paniculatum were infected by Agrobacterium rhizogenes strain LB510. The hairy roots were cultivated at 400 mL Murashige and Skoog liquid medium without growth regulator (MS0) in 1 000 mL BTBB. Each BTBB had 2 g hairy roots as initial inoculum and these cultures were treated with various concentrations of sucrose (3%, 4%, 5%, 6% w/v) and potassium nitrate (0.5, 1.0, 1.5 and 2.0 strength of MS medium). Cultures were maintained for 14 days. Fresh and dry weights of hairy roots at the end of culture were investigated. Results Various concentrations of sucrose influenced the biomass accumulation of hairy roots. Maximum biomass was reached by MS medium supplemented with 6% sucrose and it was approximately threefold higher than control. Culture supplemented with potassium nitrate at 2.0 strength of MS0 could increase biomass accumulation of hairy roots until 0.14 g dry weight and it was almost threefold higher than control. However, the maximum saponin content was obtained by MS medium supplemented with 5% sucrose and 2.0 strength potassium nitrate of MS. Conclusions Based on this research, those conditions can be used to produce biomass and saponin of hairy root of T. paniculatum in the large scale.