بيكربونات الپوتاسيوم

(تم التحويل من Potassium bicarbonate)
Potassium bicarbonate
Potassium bicarbonate
الأسماء
اسم أيوپاك
potassium hydrogencarbonate
أسماء أخرى
potassium hydrogencarbonate, potassium acid carbonate
المُعرِّفات
رقم CAS
3D model (JSmol)
مرجع بايلستاين 4535309
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.005.509 Edit this at Wikidata
رقم EC
  • 206-059-0
E number E501(ii) (acidity regulators, ...)
KEGG
UNII
الخصائص
الصيغة الجزيئية KHCO3
كتلة مولية 100.115 g/mol
المظهر white crystals
الرائحة odorless
الكثافة 2.17 g/cm3
نقطة الانصهار
قابلية الذوبان في الماء 22.4 g/100 mL (20 °C)[1]
قابلية الذوبان practically insoluble in alcohol
الحموضة (pKa) 10.329[2]

6.351 (carbonic acid)[2]

الكيمياء الحرارية
الإنتالپية المعيارية
للتشكل
ΔfHo298
-963.2 kJ/mol
علم الأدوية
A12BA04 (WHO)
المخاطر[3]
صفحة بيانات السلامة MSDS
ن.م.ع. مخطط تصويري The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
ن.م.ع. كلمة الاشارة Warning
H315, H319, H335
P261, P264, P280, P302+P352, P304+P340, P305+P351+P338, P312, P332+P313, P362, P403+P233, P405
NFPA 704 (معيـَّن النار)
Flammability code 0: لن يشتعل. مثل الماءHealth code 1: التعرض سيتسبب في تهيجاً ولكن لا يترك سوى جروح طفيفة باقية. مثل زيت الترپنتينReactivity code 0: مستقر في العادة، حتى تحت ظروف التعرض للنار، ولا يتفاعل مع الماء. مثل النيتروجين السائلSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
1
0
نقطة الوميض Non-Flammable
الجرعة أو التركيز القاتل (LD, LC):
> 2000 mg/kg (rat, oral)
مركبات ذا علاقة
Potassium carbonate
Sodium bicarbonate
Ammonium bicarbonate
مركـّبات ذات علاقة
Potassium bisulfate
Monopotassium phosphate
Dipotassium phosphate
ما لم يُذكر غير ذلك، البيانات المعطاة للمواد في حالاتهم العيارية (عند 25 °س [77 °ف]، 100 kPa).
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مراجع الجدول

Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula KHCO3. It is a white solid.[1]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

الانتاج والتفاعل

It is manufactured by treating an aqueous solution of potassium carbonate with carbon dioxide:[1]

K2CO3 + CO2 + H2O → 2 KHCO3

Decomposition of the bicarbonate occurs between 100 and 120 °C (212 and 248 °F):

2 KHCO3 → K2CO3 + CO2 + H2O

This reaction is employed to prepare high purity potassium carbonate.


الاستخدامات

الأطعمة والشراب

This compound is a source of carbon dioxide for leavening in baking. It can substitute for baking soda (sodium bicarbonate) for those with a low-sodium diet,[4] and it is an ingredient in low-sodium baking powders.[5][6]

As an inexpensive, nontoxic base, it is widely used in diverse application to regulate pH or as a reagent. Examples include as buffering agent in medications, an additive in winemaking.

Potassium bicarbonate is often added to bottled water to improve taste,[7] and is also used in club soda.

الاستخدامات الطبية والصحة

Higher potassium intake may prevent development of kidney stone disease.[8] Higher potassium intake is associated with a reduced risk of stroke.[9]

طفايات الحريق

Potassium bicarbonate is used as a fire suppression agent ("BC dry chemical") in some dry chemical fire extinguishers, as the principal component of the Purple-K dry chemical, and in some applications of condensed aerosol fire suppression. It is the only dry chemical fire suppression agent recognized by the U.S. National Fire Protection Association for firefighting at airport crash rescue sites. It is about twice as effective in fire suppression as sodium bicarbonate.[10]

الزراعة

Potassium bicarbonate has widespread use in crops, especially for neutralizing acidic soil.[11]

Potassium bicarbonate is an effective fungicide against powdery mildew and apple scab, allowed for use in organic farming.[12][13][14][15]

Potassium bicarbonate is a contact killer for Spanish moss when mixed 14 cup per gallon.[16]

التاريخ

The word saleratus, from Latin sal æratus meaning "aerated salt", first used in the nineteenth century, refers to both potassium bicarbonate and sodium bicarbonate.[17]

المراجع

  1. ^ أ ب ت H. Schultz; G. Bauer; E. Schachl; F. Hagedorn; P. Schmittinger (2005). "Potassium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a22_039. ISBN 3-527-30673-0.
  2. ^ أ ب Goldberg, Robert N.; Kishore, Nand; Lennen, Rebecca M. (2003). "Thermodynamic quantities for the ionization reactions of buffers in water". In David R. Lide (ed.). CRC handbook of chemistry and physics (84th ed.). Boca Raton, FL: CRC Press. pp. 7–13. ISBN 978-0-8493-0595-5. Retrieved 6 March 2011.
  3. ^ "Potassium bicarbonate". pubchem.ncbi.nlm.nih.gov (in الإنجليزية).
  4. ^ "Potassium Bicarbonate". encyclopedia.com. Cengage. Retrieved May 29, 2020.
  5. ^ "Home cooking with less salt". harvard.edu. Harvard University. March 2020. Retrieved May 29, 2020.
  6. ^ Wilkens, Katy G. (15 December 2018). "You Have the (Baking) Power with Low-Sodium Baking Powders". agingkingcounty.org. Aging & Disability Services for Seattle & King County. Retrieved May 29, 2020.
  7. ^ "Why Your Bottled Water Contains Four Different Ingredients". Time Magazine. July 24, 2014.
  8. ^ He FJ, MacGregor GA (2008). "Beneficial effects of potassium on human health". Physiologia Plantarum. 133 (4): 725–735. doi:10.1111/j.1399-3054.2007.01033.x. PMID 18724413.
  9. ^ Vinceti M, Filippini T, Orsini N (2016). "Meta-Analysis of Potassium Intake and the Risk of Stroke". Journal of the American Heart Association. 5 (10): e004210. doi:10.1161/JAHA.116.004210. PMC 5121516. PMID 27792643.
  10. ^ "Purple-K-Powder". US Naval Research Laboratory. Archived from the original on 15 February 2009. Retrieved 8 February 2012.
  11. ^ "Potassium Bicarbonate Handbook" (PDF). Armand Products Company. Archived from the original (PDF) on 2021-01-22. Retrieved 2016-09-06.
  12. ^ "Use of Baking Soda as a Fungicide". Archived from the original on 2010-05-07. Retrieved 2010-02-14.
  13. ^ "Powdery Mildew - Sustainable Gardening Australia". Archived from the original on 2016-03-03.
  14. ^ "Organic Fruit Production in Michigan".
  15. ^ "Efficacy of Armicarb (potassium bicarbonate) against scab and sooty blotch on apples" (PDF).
  16. ^ "How to Toss Your Spanish Moss". SkyFrog landscape company. 4 December 2020.
  17. ^ "saleratus". merriam-webster.com. Merriam-Webster. Retrieved May 29, 2020.

وصلات خارجية

H2CO3 He
Li2CO3 BeCO3 B C N O F Ne
Na2CO3 MgCO3 Al Si P S Cl Ar
K2CO3 CaCO3 Sc Ti V Cr MnCO3 FeCO3 CoCO3 NiCO3 CuCO3 ZnCO3 Ga Ge As Se Br Kr
Rb2CO3 SrCO3 Y Zr Nb Mo Tc Ru Rh Pd Ag2CO3 CdCO3 In Sn Sb Te I Xe
Cs2CO3 BaCO3 Hf Ta W Re Os Ir Pt Au Hg Tl2CO3 PbCO3 Bi Po At Rn
Fr Ra Rf Db Sg Bh Hs Mt Ds Rg Cn Uut Uuq Uup Uuh Uus Uuo
La2(CO3)3 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr