Chloroacetic acid: kev npaj thiab tshuaj lom neeg

Chloroacetic acid: kev npaj thiab tshuaj lom neeg
Chloroacetic acid: kev npaj thiab tshuaj lom neeg

Video: Chloroacetic acid: kev npaj thiab tshuaj lom neeg

Video: Chloroacetic acid: kev npaj thiab tshuaj lom neeg
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Chloroacetic acid yog acetic acid uas ib qho ntawm cov hydrogen atoms nyob rau hauv methyl pawg yog hloov los ntawm ib tug dawb chlorine atom. Nws tau txais los ntawm kev sib cuam tshuam ntawm acetic acid nrog chlorine.

Cov khoom siv tseem ceeb rau kev tau txais yog acetic acid. Chloroacetic acid kuj tuaj yeem tau txais los ntawm hydrolysis ntawm trichlorethylene.

chloroacetic acid
chloroacetic acid

Raws li qhov tshwm sim ntawm hydrolysis, tau txais cov khoom lag luam ntshiab. Txawm li cas los xij, txoj kev no suav nrog kev siv cov dej ntshiab distilled yam tsis muaj impurities.

Chloroacetic acid yog siv los tsim ntau hom dyes, tshuaj, vitamins thiab ntau yam tshuaj tua kab. Nws kuj yog siv los ua ib qho surfactant.

Thaum chlorinating acetic acid nyob rau hauv nruab nrab ntawm inorganic catalysts (namely, acetic anhydride, sulfur thiab phosphorus), chloroacetic acid tau txais, cov mis ntawm uas yog CH 2 Cl- COOH:

CH3-COOH+Cl2↑ →=> CH2Cl- COOH + HCl.

Lub cev muaj zog

Chloroacetic acid yog hygroscopic, pob tshab crystal nrog melting point ntawm 61.2 ° C thiabKub taw tes 189.5 ° C. Cov khoom no yooj yim soluble (ob leeg hauv cawv thiab hauv ib qho nruab nrab aqueous, nrog rau hauv acetone, benzene thiab carbon tetrachloride).

chloroacetic acid formula
chloroacetic acid formula

Monochloroacetic acid yog ib yam tshuaj lom thiab txaus ntshai heev, uas feem ntau ua rau tuag taus yog nqos. Thaum nws los rau hauv daim tawv nqaij, chloroacetic acid ua rau mob hnyav heev uas tsis kho tau ntev.

Kev nqus cov kua qaub tuaj yeem ua rau mob ntsws hauv lub ntsws thiab hauv cov hlab cua sab saud thiab sab qis.

Cov neeg ua haujlwm hauv kev cob qhia ntau lawm rau kev tsim cov monochloroacetic acid raug kev txom nyem los ntawm kev hnov tsw tsw, mob rhinopharyngitis, tev thiab tawv nqaij qhuav.

Tsis tas li, nrog kev sib cuam tshuam ntev nrog cov tshuaj tiv thaiv, cov kab mob ntawm daim tawv nqaij ntawm daim tawv nqaij tau pom, qhia tias muaj kab mob dermatitis nyob rau hauv lub ntsej muag, caj dab, sab sauv thiab sab qis, qee zaum - lub cev.

Chloroacetic acid nyob rau hauv tib neeg lub cev hloov mus ua thiodiacetic acid, uas tawm hauv lub cev nrog quav thiab zis.

Kev ceev faj txog kev ua haujlwm tseem ceeb:

- nws yog txwv tsis pub nqus pa, pa, pa taws thiab plua plav;

- Nco ntsoov siv cov cuab yeej tiv thaiv tus kheej thaum ua haujlwm cuam tshuam nrog kev sib cuag nrog cov kua qaub (tsis muaj qhov tsis zoo, tsom iav, khau roj hmab thiab hnab looj tes);

- nyob rau hauv rooj plaub ntawm kev nqus pa los yog kev sib cuag ntawm cov kua qaub ntawm daim tawv nqaij, nrhiav kev pab tsim nyog tam simqhov chaw kho mob ze tshaj plaws.

acetic acid chloroacetic acid
acetic acid chloroacetic acid

Qhov siab tshaj plaws tso cai thiab theoretically muaj kev nyab xeeb concentration ntawm chloroacetic acid nyob rau hauv cov huab cua ntawm ib qho chaw tsim khoom yog hais txog ib mg/m3.

Thaum thauj cov kua qaub, nws tau ntim rau hauv cov thawv polymer (cov thawv lossis cov thoob), cov thawv ntawv duab los qhia, thiab cov thawv hlau. Kev thauj mus los los ntawm txhua hom kev thauj mus los tau raug tso cai.

Nws yuav tsum nco ntsoov tias monochloroacetic acid yog nplaim taws thiab tawg. Cov khoom no yog nplaim taws heev.

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