(R) – (+) – 2 – (4-Hydroxyphenoxy) Propionic Acid (HPPA)
Katundu:(R) – (+) – 2 – (4-Hydroxyphenoxy) Propionic Acid (HPPA)
CAS #: 94050-90-5
Molecular Formula: C9H10O4
Zomangamanga:
Ntchito: Amagwiritsidwa ntchito popanga mankhwala a aryloxy phenoxy-propionates herbicide.
Zofotokozera:
| Kanthu | Standard |
| Maonekedwe | White crystalline cholimba |
| Kuyesa kwa Chemical | ≥99.0% |
| Kuyera kwa kuwala | ≥99.0% |
| Malo osungunuka | 143-147 ℃ |
| Chinyezi | ≤0.5% |
Ntchito yeniyeni
Mankhwala ophera tizilombo; Amagwiritsidwa ntchito ngati wapakatikati wa puma, mkulu dzuwa Gaicao, jingwensha, jingquizalofop, alkyne ester ndi herbicides ena.
Njira yopangira
1. P-chlorobenzoyl chloride inakonzedwa ndi zomwe p-chlorobenzoyl kolorayidi ndi anisole, kenako hydrolysis ndi demethylation.
2. Kuchita kwa p-chlorobenzoyl chloride ndi phenol: Sungunulani 9.4g (0.1mol) wa phenol mu 4ml wa 10% sodium hydroxide solution, onjezerani 14ml (0.110mol) wa p-chlorobenzoyl chloride dropwise pa 40 ~ 45 ℄ 30min, ndikuchitapo pa kutentha komweko kwa 1H. Kuzizira mpaka kutentha kwa chipinda, fyuluta ndi kuuma kuti mupeze 22.3g ya phenyl p-Chlorobenzoate. Zokolola ndi 96%, ndipo malo osungunuka ndi 99 ~ 101 ℃.
Kutayikira mwadzidzidzi chithandizo
Njira zodzitetezera, zida zodzitchinjiriza ndi njira zoperekera mwadzidzidzi kwa ogwira ntchito:
Ndibwino kuti ogwira ntchito zamwadzidzidzi azivala zida zopumira mpweya, zovala zotsutsana ndi ma static ndi magolovesi osamva mafuta a labala.
Osakhudza kapena kuwoloka zotayika.
Zida zonse zomwe zimagwiritsidwa ntchito panthawiyi ziyenera kuchotsedwa.
Dulani gwero la kutayikira momwe mungathere. Chotsani zoyatsira zonse.
Malo ochenjeza adzasankhidwa molingana ndi malo omwe akhudzidwa ndi kutuluka kwa madzi, nthunzi kapena fumbi, ndipo ogwira ntchito osayenera adzasamutsidwira kumalo otetezeka kuchokera ku mphepo ndi mphepo.
Njira zotetezera zachilengedwe: zili ndi kutayikira kuti zipewe kuipitsidwa kwa chilengedwe. Pewani kutayikira kuti musalowe mu ngalande, madzi apansi ndi pansi.
Njira zosungira ndi kuchotsa mankhwala otayira ndi zida zotayira zomwe zimagwiritsidwa ntchito:
Kutayikira kwakung'ono: Sonkhanitsani madzi otuluka mu chidebe chomata momwe mungathere. Yankhani ndi mchenga, activated carbon kapena zinthu zina zoziziritsa kukhosi ndikusamutsira pamalo otetezeka. Osathamangira mu ngalande.
Kutayikira kwakukulu: kumanga dike kapena kukumba dzenje lolandirira alendo. Tsekani chitoliro cha ngalande. Chithovu chimagwiritsidwa ntchito kuphimba evaporation. Kusamutsira ku tanki yamagalimoto kapena chotolera chapadera chokhala ndi pampu yosaphulika, yobwezeretsanso kapena kunyamula kupita kumalo opangira zinyalala kuti akatayidwe.
Zida zodzitetezera:
Chitetezo chopumira: mukakhala mpweya wambiri kuposa muyezo, valani chigoba cha mpweya wosefera (theka chigoba). Mukamapulumutsa kapena kuthawa mwadzidzidzi, muyenera kuvala zida zopumira mpweya.
Chitetezo m'manja: valani magolovesi osamva mafuta amphira.
Kuteteza maso: Valani maso otetezedwa ndi mankhwala.
Khungu ndi chitetezo cha thupi: valani zovala zantchito zolowa ndi poizoni.
