(R) – (+) – 2 – (4-Hydroxyphenoxy) Propionic Acid (HPA)
Katundu: (R) – (+) – 2 – (4-Hydroxyphenoxy) Propionic Acid (HPA)
CAS#: 94050-90-5
Fomula ya Maselo: C9H10O4
Fomula Yopangira Kapangidwe:
Ntchito: Amagwiritsidwa ntchito popanga mankhwala ophera tizilombo a aryloxy phenoxy-propionates.
Mafotokozedwe:
| Chinthu | Muyezo |
| Maonekedwe | Cholimba choyera cha kristalo |
| Kuyesa mankhwala | ≥99.0% |
| Kuyera kwa kuwala | ≥99.0% |
| Malo osungunuka | 143-147℃ |
| Chinyezi | ≤0.5% |
Kugwiritsa ntchito kwina
Mankhwala ophera tizilombo; Amagwiritsidwa ntchito ngati mankhwala ophera tizilombo a puma, Gaicao, jingwensha, jingquizalofop, alkyne ester ndi mankhwala ena ophera tizilombo.
Njira yopangira
1. P-chlorobenzoyl chloride inakonzedwa pogwiritsa ntchito njira ya p-chlorobenzoyl chloride ndi anisole, kenako hydrolysis ndi demethylation.
2. Momwe p-chlorobenzoyl chloride imachitira ndi phenol: sungunulani 9.4g (0.1mol) ya phenol mu 4ml ya 10% sodium hydroxide solution, onjezerani 14ml (0.110mol) ya p-chlorobenzoyl chloride pang'onopang'ono pa 40 ~ 45 ℃, yikani mkati mwa mphindi 30, ndipo ikani kutentha komweko kwa 1H. Zizireni kutentha kwa chipinda, sefani ndi kuuma kuti mupeze 22.3g ya phenyl p-Chlorobenzoate. Zokolola zake ndi 96%, ndipo malo osungunuka ndi 99 ~ 101 ℃.
Chithandizo chadzidzidzi cha kutayikira kwa madzi
Njira zodzitetezera, zida zodzitetezera, ndi njira zochotsera mwadzidzidzi kwa ogwira ntchito:
Ndikoyenera kuti ogwira ntchito zachipatala zadzidzidzi azivala zida zopumira mpweya, zovala zoteteza kutentha ndi magolovesi osagwira mafuta a rabara.
Musakhudze kapena kuphatikiza madzi omwe atayika.
Zipangizo zonse zomwe zimagwiritsidwa ntchito panthawi yogwira ntchito ziyenera kukhala pansi.
Dulani gwero la kutuluka kwa madzi momwe mungathere. Chotsani magwero onse oyatsira moto.
Malo ochenjeza ayenera kusankhidwa malinga ndi malo omwe akhudzidwa ndi madzi, nthunzi kapena fumbi, ndipo antchito osayenera ayenera kuchotsedwa kupita kumalo otetezeka kuchokera ku mphepo ndi mphepo.
Njira zotetezera chilengedwe: kuteteza kutuluka kwa madzi kuti zisawononge chilengedwe. Kuletsa kutuluka kwa madzi kuti kusalowe m'madzi a m'nyanja, m'madzi a pamwamba ndi pansi pa nthaka.
Njira zosungira ndi kuchotsa mankhwala otuluka ndi zinthu zotayira zomwe zimagwiritsidwa ntchito:
Kutayikira pang'ono: sonkhanitsani madzi otayikira mu chidebe chotseka momwe mungathere. Yamwani ndi mchenga, mpweya wopangidwa kapena zinthu zina zosagwira ntchito ndikuzisamutsira pamalo otetezeka. Musatulutse madzi m'chimbudzi.
Kutayikira kwakukulu: pangani thanki kapena kukumba dzenje lolandirira. Tsekani chitoliro chotulutsira madzi. Thovu limagwiritsidwa ntchito kuphimba nthunzi. Tumizani ku galimoto ya thanki kapena chosonkhanitsira chapadera chokhala ndi pampu yosaphulika, kubwezeretsanso kapena kunyamula kupita kumalo oyeretsera zinyalala kuti akatayidwe.
Zipangizo zodzitetezera:
Chitetezo cha kupuma: pamene kuchuluka kwa mpweya m'mlengalenga kwapitirira muyezo, valani chigoba cha mpweya chosefera (theka la chigoba). Mukapulumutsa kapena kuthawa mwadzidzidzi, muyenera kuvala chipangizo chopumira mpweya.
Chitetezo cha manja: Valani magolovesi osagwira mafuta a rabara.
Chitetezo cha maso: valani maso oteteza ku zinthu zoopsa pogwiritsa ntchito mankhwala.
Chitetezo cha khungu ndi thupi: valani zovala zogwirira ntchito zoletsa poizoni.
