Cov khoom siv lub cev thiab kev siv ntawm calcium chloride

Calcium chloride yog ntsev uas tsim los ntawm cov chloride ions thiab calcium ions. Calcium chloride anhydrous muaj zog nqus dej noo, siv ua desiccant rau ntau yam tshuaj, ntxiv rau cov hmoov av ntawm txoj kev, cov tshuaj txhim kho av, cov tub yees, cov tshuaj ntxuav dej, cov tshuaj nplaum. Nws yog cov tshuaj siv dav dav, cov ntaub ntawv raw tshuaj, cov khoom noj khoom haus ntxiv, cov khoom noj ntxiv rau tsiaj thiab cov ntaub ntawv raw rau kev tsim cov hlau calcium.

Cov khoom siv lub cev ntawm calcium chloride

Calcium chloride yog xim tsis muaj xim cubic siv lead ua, dawb los yog dawb tawm, granular, honeycomb block, spheroid, irregular granular, hmoov. Melting point 782 ° C, ceev 1.086 g / mL ntawm 20 ° C, boiling point 1600 ° C, dej solubility 740 g / L. Me ntsis lom, tsis muaj ntxhiab, me ntsis iab saj. Heev hygroscopic thiab yooj yim deliquested thaum raug rau huab cua.

Yooj yim yaj hauv dej, thaum tso tawm ntau qhov kub (calcium chloride dissolution enthalpy ntawm -176.2 cal/g), nws cov kua dej yog me ntsis acidic. Yaj hauv cawv, acetone, acetic acid. Reacting nrog ammonia lossis ethanol, CaCl2·8NH3 thiab CaCl2·4C2H5OH complexes tau tsim, feem. Thaum kub qis, cov kua crystallizes thiab precipitates ua hexahydrate, uas maj mam yaj hauv nws cov dej crystalline thaum cua sov rau 30 ° C, thiab maj mam poob dej thaum cua sov rau 200 ° C, thiab dhau los ua dihydrate thaum cua sov rau 260 ° C, uas dhau los ua dawb porous anhydrous calcium chloride.

Calcium Chloride Tsis Muaj Dej

1, cov khoom siv lub cev thiab tshuaj: tsis muaj xim siv lead ua cubic, dawb lossis dawb tawm-dawb porous block lossis granular khoom. Qhov ceev ntawm qhov sib piv yog 2.15, lub ntsiab lus yaj yog 782 ℃, lub ntsiab lus kub yog siab tshaj 1600 ℃, qhov hygienic muaj zog heev, yooj yim rau delix, yooj yim yaj hauv dej, thaum tso tawm ntau cua sov, tsis muaj ntxhiab, saj me ntsis iab, cov kua dej yog me ntsis acidic, yaj hauv cawv, acrylic vinegar, acetic acid.

2, kev siv khoom: Nws yog ib tug neeg sawv cev rau kev tsim cov xim pas dej xim. Kev tsim cov nitrogen, acetylene roj, hydrogen chloride, oxygen thiab lwm yam roj desiccant. Cawv, ethers, esters thiab acrylic resins yog siv los ua cov neeg sawv cev dehydrating, thiab lawv cov kua dej yog cov tub yees tseem ceeb rau cov tub yees thiab tub yees. Nws tuaj yeem ua kom cov pob zeb tawv dua, ua rau cov cement mortar tsis txias, thiab yog ib tug neeg sawv cev zoo heev. Siv ua tus neeg sawv cev tiv thaiv rau txhuas magnesium metallurgy, tus neeg sawv cev refining.

Cov tshuaj calcium chloride flake

1, cov khoom siv lub cev thiab tshuaj: tsis muaj xim siv lead ua, cov khoom no yog dawb, tawm-dawb siv lead ua. Qhov saj iab, muaj zog deliquescent.
Nws qhov ceev yog 0.835, yooj yim soluble hauv dej, nws cov kua dej yog nruab nrab lossis me ntsis alkaline, corrosive, soluble hauv cawv thiab insoluble hauv ether, thiab dehydrated rau hauv anhydrous khoom thaum rhuab mus rau 260 ℃. Lwm yam khoom siv tshuaj lom neeg zoo ib yam li anhydrous calcium chloride.

2, kev ua haujlwm thiab kev siv: flake calcium chloride siv ua refrigerant; Antifreeze agent; Molten ice lossis daus; Flame retardants rau kev ua tiav thiab ua tiav paj rwb ntaub; Ntoo preservatives; Roj hmab tsim ua tus neeg sawv cev folding; Mixed starch yog siv ua tus neeg sawv cev gluing.

Cov kua dej calcium chloride

Cov tshuaj calcium chloride muaj cov yam ntxwv ntawm kev ua tau zoo, qhov khov qis dua li dej, cua sov tawm thaum sib cuag nrog dej, thiab muaj kev ua haujlwm zoo dua, thiab nws qhov khov qis tuaj yeem siv rau ntau yam kev lag luam thiab cov chaw pej xeem.

Lub luag haujlwm ntawm cov tshuaj calcium chloride:

1. Alkaline: Calcium ion hydrolysis yog alkaline, thiab hydrogen chloride yog volatile tom qab chloride ion hydrolysis.
2, kev sib txuas lus: muaj cov ions hauv cov tshuaj uas tuaj yeem txav mus los tau yooj yim.
3, qhov khov taw tes: qhov khov taw tes ntawm cov tshuaj calcium chloride qis dua dej.
4, lub ntsiab lus kub: calcium chloride aqueous kua kub yog siab dua dej.
5, evaporation crystallization: calcium chloride aqueous kua evaporation crystallization yuav tsum nyob rau hauv ib qho chaw puv nrog hydrogen chloride.

Cov tshuaj desiccant

Calcium chloride siv tau ua desiccant lossis dehydrating agent rau cov pa roj thiab cov kua organic. Txawm li cas los xij, nws tsis tuaj yeem siv los ziab ethanol thiab ammonia, vim ethanol thiab ammonia react nrog calcium chloride los ua cov cawv sib xyaw CaCl2 · 4C2H5OH thiab ammonia sib xyaw CaCl2 · 8NH3, raws li. Anhydrous calcium chloride kuj tseem tuaj yeem ua rau cov khoom siv hauv tsev siv ua tus neeg sawv cev hygroscopic huab cua, anhydrous calcium chloride ua tus neeg sawv cev nqus dej tau pom zoo los ntawm FDA rau kev hnav khaub ncaws pab thawj zaug, nws lub luag haujlwm yog kom ntseeg tau tias qhov txhab qhuav.
Vim tias calcium chloride yog qhov nruab nrab, nws tuaj yeem ziab cov pa roj acidic lossis alkaline thiab cov kua organic, tab sis kuj nyob hauv chav kuaj kom ua cov pa roj me me xws li nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide, carbon dioxide, nitrogen dioxide, thiab lwm yam, thaum ziab cov pa roj no. Cov calcium chloride granular anhydrous feem ntau siv ua desiccant los sau cov kav dej qhuav, thiab cov algae loj (lossis seaweed tshauv) ziab nrog calcium chloride tuaj yeem siv rau kev tsim cov tshauv soda. Qee lub tshuab dehumidifiers hauv tsev siv calcium chloride los nqus cov dej noo los ntawm huab cua.
Cov calcium chloride anhydrous kis tau rau ntawm txoj kev xuab zeb, thiab cov khoom hygroscopic ntawm calcium chloride anhydrous siv los ua kom cov dej noo hauv huab cua thaum cov dej noo hauv huab cua qis dua qhov dej noo kom ua rau txoj kev ntub, yog li tswj cov hmoov av ntawm txoj kev.