Hypo phosphorous qauv yog dab tsi?

Hypophosphorous acid(link:https://www.bloomtechz.com/synthetic-chemical/organic-materials/hypophosphorous-acid-solution-cas-6303-21-5.html)yog cov kua tsis muaj xim nrog cov tshuaj formula H3PO2. Lwm lub npe: dej, HO₂P. Vim tias nws cov qauv tshuaj tshwj xeeb, nws muaj ntau yam tshuaj sib txawv thiab cov khoom ua haujlwm.

Chemical structure:

1. Molecular muaj pes tsawg leeg:

Lub molecule ntawm hypophosphorous acid muaj ib tug phosphorus atom (P) thiab peb hydrogen atoms (H), tsim ib tug phosphorus-hydrogen bond.

2. Oxidation xeev:

Hauv Hypophosphorous acid, phosphorus muaj oxidation lub xeev ntawm ntxiv rau 1, uas phim cov hydrogen. Qhov no yog vim phosphorus atom poob ob lub atoms oxygen.

3. Cov qauv zoo:

Cov molecules ntawm hypophosphorous acid yog nyob rau hauv lub triangular pyramid qauv. Lub phosphorus atom nyob rau hauv nruab nrab ntawm lub molecule thiab teem nyob rau hauv ib daim duab peb sab nyob ib ncig ntawm nws peb hydrogen atoms. Cov qauv no ua rau Hypophosphorous acid molecule kuj ruaj khov hauv qhov chaw.

4. Polarity:

Hypophosphorous acid yog polar molecule. Lub polarity ntawm phosphorus-hydrogen bonds tso cai rau cov molecule kom muaj cov cheeb tsam ntawm ib nrab zoo thiab ib nrab tsis zoo nqi. Phosphorus atoms muaj ib feem tsis zoo nqi, thaum hydrogen atoms muaj ib nrab nqi zoo.

5. Hydrogen bond tsim:

Vim yog cov yam ntxwv ntawm cov qauv hypophosphorous acid molecule, nws tuaj yeem cuam tshuam nrog lwm cov tebchaw los ntawm hydrogen bonds. Piv txwv li, Hypophosphorous acid tuaj yeem tsim cov hydrogen bond complex nrog dej molecules lossis cawv molecules los ntawm hydrogen bonds.

Chemical Properties:

1. Hypophosphorous acid yog cov kua qaub nruab nrab uas tsim cov protons (H^ntxiv) hauv dej. Nws undergoes acid-base neutralization cov tshuaj tiv thaiv nrog alkali los tsim cov hypophosphite thiab dej. Piv txwv li:

H₃PO₂plus NaOH → NaH₂PO₂ntxiv H₂O

2. Hypophosphorous acid yog ib tug muaj zog txo tus neeg sawv cev thiab qhia tau hais tias zoo txo ​​cov khoom nyob rau hauv ntau yam tshuaj. Nws tuaj yeem txo qee cov hlau ions rau cov hlau thiab ua lub luag haujlwm tseem ceeb hauv ntau cov organic synthesis tshwm sim. Nov yog qee qhov piv txwv:

a. Txo cov nickel hydrate:

Ni₂plus plus H₃PO₂→ Ni plus H₃PO₃

b. Kev txo qis ntawm uranium chloride:

UCl₆plus 12 H₃PO₂→ U plus 6 H₃PO₃ua 6hcl

3. Oxidative zog: Txawm hais tias hypophosphorous acid yog ib tug txo tus neeg sawv cev, nws kuj muaj peev xwm nthuav oxidative zog nyob rau hauv ib co kev xav. Nyob rau hauv cov xwm txheej alkaline, nws lub peev xwm oxidizing yog txhim kho, thiab qee cov tebchaw tuaj yeem oxidized rau siab valence xeev, xws li:

H₃PO₂2 NaOH plus 2Cl₂→ Na₂HPO₄2 NaCl plus H₂O

4. Cov tshuaj tiv thaiv Esterification:

Hypophosphorous acid tuaj yeem hnov ​​​​mob nrog cawv lossis phenols kom tau txais cov tshuaj tiv thaiv esterification los tsim cov tshuaj hypophosphorous ester. Piv txwv li:

H₃PO₂ROH → ROH₂PO₂

5. Peroxidation tshuaj tiv thaiv:

Hypophosphorous acid tuaj yeem hnov ​​​​mob nrog hydrogen peroxide los tsim phosphoric acid thiab dej:

H₃PO₂ntxiv H₂O₂ → H₃PO₄ntxiv H₂O

6. Synthesis ntawm Hydroxyphosphonate:

Hypophosphorous acid reacts nrog aldehydes los yog ketones los ua tus coj hydroxyphosphonates. Cov tshuaj tiv thaiv no hu ua Pudovik cov tshuaj tiv thaiv. Piv txwv li:

H₃PO₂plus RCHO → RCH(OH) PO₂

7. Txo cov carboxylic acids:

Hypophosphorous acid tuaj yeem txo cov carboxylic acids rau cov aldehydes sib xws. Piv txwv li:

RCOH plus H₃PO₂→ RCHO plus H₃PO₃

8. Txo cov ammonia:

Hypophosphorous acid tuaj yeem cuam tshuam nrog ammonia los ua ammonium hypophosphite. Piv txwv li:

H₃PO₂plus NH₃→ NH₄H₂PO₂

9. Txo cov oxidized phosphorous acid:

Hypophosphorous acid tuaj yeem txo oxidized phosphorous acid (H5P3O10) los tsim cov kua qaub hypophosphorous. Piv txwv li:

H₅P₃O₁₀plus 6 NaH₂PO₂ → 3H₃PO₂plus 6 NaHPO₃

10. Reactivity: Hypophosphorous acid reacts nrog ntau lub tebchaw, nrog rau cov organic tebchaw, inorganic acids, hlau ions, thiab lwm yam. Ntawm no yog ib co kev tshwm sim:

- Hypophosphorous acid reacts nrog aldehydes / ketones los tsim cov hydroxyphosphonates sib raug.

- Hypophosphorous acid reacts nrog cov kua qaub chlorides los tsim cov hydroxyphosphonates sib raug.

- Hypophosphorous acid reacts nrog sulfuric acid los tsim sulfurous acid.

- Hypophosphorous acid reacts nrog hydrogen peroxide los tsim phosphoric acid thiab dej.

- Hypophosphorous acid reacts nrog ammonia los tsim ammonium hypophosphite.

11. Stability: Hypophosphorous acid yog qhov ruaj khov ntawm chav tsev kub, tab sis nws yooj yim decomposed los ntawm lub teeb thiab cua sov. Cov huab cua ntev ntev yuav maj mam oxidized rau phosphoric acid.

a. Thermal stability:

Hypophosphorous acid yog qhov ruaj khov ntawm chav tsev kub, tab sis tuaj yeem decompose ntawm qhov kub thiab txias. Yog li ntawd, yuav tsum tsis txhob kub dhau thaum tuav los yog khaws cia hypophosphorous acid. Feem ntau, nws yog qhov zoo tshaj plaws khaws cia ntawm chav tsev kub, kom deb ntawm cov khoom siv cua sov lossis cov nplaim taws qhib.

b. Photostability:

Hypophosphorous acid yog rhiab heev rau lub teeb thiab yog yooj yim decomposed los ntawm lub zog ntawm lub teeb. Yog li ntawd, thaum lub sij hawm cia thiab ua hauj lwm, sim kom tsis txhob ntev raug rau lub teeb muaj zog los yog ultraviolet rays. Koj tuaj yeem xaiv lub thawv opaque los khaws cov kua qaub hypophosphorous kom txo tau qhov cuam tshuam ntawm lub teeb ntawm nws qhov ruaj khov.

12. Solubility: Hypophosphorous acid muaj dej solubility zoo. Nws tuaj yeem yaj tag nrho hauv dej los tsim cov xim tsis muaj xim thiab pob tshab. Nyob rau hauv ib txwm kub thiab siab tej yam kev mob, solubility ntawm hypophosphorous acid yog kuj siab.

a.pH tus nqi:

Hypophosphorous acid yog ib qho tsis muaj zog acid uas nws cov tshuaj yog acidic. Raws li qhov concentration ntawm H ntxiv ions hauv cov tshuaj, pH tus nqi ntawm Hypophosphorous acid daws tuaj yeem hloov kho. Feem ntau, cov tshuaj hypophosphorous acid nrog qis concentration yog tsis muaj zog acidic, nrog tus nqi pH ntawm li 2 thiab 3.

b. Kev kub ntxhov:

Kub yuav cuam tshuam rau solubility ntawm hypophosphorous acid. Feem ntau, solubility nce nrog nce kub. Yog li ntawd, ntawm qhov kub siab dua, nws yooj yim dua rau yaj Hypophosphorous acid rau hauv dej los tsim cov tshuaj.

c. Concentration cuam tshuam:

Lub solubility ntawm hypophosphorous acid yog txuam nrog nws cov concentration. Nyob rau hauv ib tug tej yam ntau yam, lub solubility ntawm hypophosphorous acid nce nrog nce concentration. Txawm li cas los xij, thaum lub concentration nce mus txog ib qho kev txwv, lub solubility yuav saturated, uas yog, tsis muaj ntxiv hypophosphorous acid yuav yaj.

d. Solution stability:

Hypophosphorous acid daws yog qhov ruaj khov thaum khaws cia thiab tuav. Txawm li cas los xij, kev cia ntev ntev lossis raug rau cov xwm txheej tsis zoo (xws li qhov kub thiab txias, lub teeb, oxidizing agents, thiab lwm yam) tuaj yeem ua rau degradation thiab decomposition ntawm cov tshuaj. Yog li, cov xwm txheej tsis zoo no yuav tsum tau zam thaum siv thiab tuav cov tshuaj hypophosphorous acid.

e. Kev daws teeb meem:

Hypophosphorous acid daws muaj cov kev siv tseem ceeb hauv ntau qhov chaw. Piv txwv li, nws tuaj yeem siv los ua tus neeg sawv cev txo qis, catalyst thiab preservative hauv kev lag luam electroplating. Tsis tas li ntawd, cov tshuaj hypophosphorous acid feem ntau yog siv los txo cov neeg ua haujlwm thiab cov neeg ua haujlwm sib txuas hauv cov tshuaj synthesis thiab organic synthesis.

13. Kev tsim cov ntsev: Hypophosphorous acid tuaj yeem tsim hypophosphite, xws li sodium hypophosphite (NaH₂PO₂thiab ammonium hypophosphite (NH₄H₂PO₂). Cov ntsev no yog ib qho tseem ceeb hauv qee qhov kev lag luam thiab kev kuaj sim.

Ntxiv nrog rau cov tshuaj tiv thaiv saum toj no, Hypophosphorous acid kuj tuaj yeem ua lub luag haujlwm hauv lwm cov tshuaj tiv thaiv, xws li nag lossis daus ntawm cov hlau ions, txo cov catalysts, thiab lwm yam. Nws yuav tsum tau muab sau tseg tias hypophosphorous acid muaj qee yam toxicity thiab corrosiveness, thiab tsim nyog kev nyab xeeb. Kev ntsuas yuav tsum tau ua thaum lub sijhawm ua haujlwm, thiab cov txheej txheem kev ua haujlwm hauv chav kuaj yuav tsum tau ua raws.