Disodium Hydrogen Phosphate
Cov ntaub ntawv yooj yim
Lub npe:Disodium Hydrogen Phosphate
Lwm lub npe:Sodium phosphate dibasic; DSP
Cov mis mos molecular:Na₂HPO₄ (anhydrous) / Na₂HPO₄ · 12H₂O (dodecahydrate)
Molecular Luj:141.96 (anhydrous) / 358.14 (dodecahydrate)
CAS nr:7558-79-4 (anhydrous) / 10028-24-7 (dodecahydrate)
2. Lub cev thiab tshuaj lom neeg Cov khoom
- Qhov tsos:Anhydrous - hmoov dawb; Dodecahydrate - xim tsis muaj pob tshab
- Melting point:Anhydrous decomposes ntawm kwv yees li 250 degree; dodecahydrate melts ntawm kwv yees li 35℃(hauv nws tus kheej dej ntawm crystallization)
- Ceev:Anhydrous txog 1.7 g / cm³; dodecahydrate txog 1.52 g / cm³
- Solubility:Soluble hauv dej (anhydrous txog 7.7 g / 100 mL ntawm 20 degree); insoluble hauv ethanol
- Aqueous daws:Alkaline (1% kua pH txog 9.0)
- Kev ruaj ntseg:Anhydrous daim ntawv yog ruaj khov; dodecahydrate effloresces hauv huab cua
3.Main Functions and Applications (Nws yog dab tsi siv?)
- Khoom noj khoom haus (kev siv tseem ceeb):Raws li tus neeg sawv cev buffering, emulsifier thiab kev txhim kho zoo (E339), nws tau siv dav hauv cov khoom siv nqaij (dej tuav thiab kev txhim kho kev ntxhib los mos), cov khoom noj siv mis thiab dej haus, stabilizing pH, txhim kho qhov ncauj thiab nce yield.
- Dejkev kho mob:Ua haujlwm ua dej softener thiab corrosion-scale inhibitor hauv boiler dej kho, tiv thaiv scale deposition thiab hlau corrosion.
- Pharmaceutical:Siv ua saline laxative, pH regulator thiab electrolyte ntxiv nyob rau hauv formulations thiab kho mob rehydration.
- Fermentation:Ua raws li qhov zoo tshaj plaws phosphorus qhov chaw hauv microbial kab lis kev cai xov xwm, txhawb kev fermentation ntawm poov xab thiab tshuaj tua kab mob.
- Cov tshuaj ntxuav tes:Siv los ua tus tsim los txhim kho kev ua haujlwm tu.
- Analytical Chemistry:Ib qho tseem ceeb ntawm phosphate-buffered saline (PBS), dav siv hauv kev tshawb fawb biochemical thiab tshuaj.
- Electronics:Ua hauj lwm hauv kev npaj hluav taws xob- qib phosphates.
4.A Benchmark-Level Industrial Masterpiece - Ib qho yooj yim Crafted "Food-Qib" Buffering Phosphate!
Na2HPO4 cov ntsiab lus nce mus txog 98.0% lossis siab dua, xa tus nqi hwm - qib purity thiab ua haujlwm zoo ib yam.
Ultra- tsis tshua muaj fluoride, arsenic, hlau hnyav thiab txhuas ua kom cov zaub mov- qib kev nyab xeeb rau cov ntawv thov uas xav tau tshaj plaws. High purity, zoo ib yam pH thiab zoo heev buffering muaj peev xwm ua rau nws muaj ntau yam, nqi -kev xaiv zoo.
"Qhov koj pom yog qhov koj tau txais" - txhua lub nkoj nrog daim ntawv pov thawj tiav ntawm kev tshuaj xyuas.
Khoom Specification - Disodium Hydrogen Phosphate
|
Khoom qauv |
Disodium Hydrogen Phosphate (Na2HPO4) |
|
Qhov tshwm sim |
Anhydrous: hmoov dawb; Dodecahydrate: cov xim tsis muaj pob tshab |
|
Na2HPO4 cov ntsiab lus (dry hauv paus,%) |
Ntau dua lossis sib npaug rau 98.0 |
|
Dej-insoluble teeb meem (%) |
Tsawg dua los yog sib npaug li 0.2 |
|
Fluoride (raws li F, ppm) |
Tsawg dua los yog sib npaug li 50 |
|
Arsenic (As, ppm) |
Tsawg dua los yog sib npaug 3 |
|
Cov hlau hnyav (raws li Pb, ppm) |
Tsawg dua los yog sib npaug li 10 |
|
Lead (Pb, ppm) |
Tsawg dua los yog sib npaug 4 |
|
pH (1% aqueous tov) |
8.8 – 9.2 |
|
Poob ntawm ziab (dodecahydrate,%) |
Tsawg dua los yog sib npaug rau 10.0 |
|
Ntim |
25 kg kraft hnab nrog PE puab liner / 50 kg hnab |
- Test method reference:Na2HPO4 cov ntsiab lus los ntawm acid-base titration; dej-insoluble teeb meem los ntawm txoj kev gravimetric (GB/T 9738); fluoride los ntawm ion- xaiv electrode; arsenic los ntawm molybdenum xiav txoj kev; hnyav hlau / txhuas los ntawm txoj kev colorimetric; pH los ntawm txoj kev potentiometric; poob ntawm kev ziab los ntawm qhov cub- txoj kev ziab.
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