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DL-Methionine (CAS # 59-51-8) Chithunzi Chowonetsedwa
  • DL-Methionine (CAS# 59-51-8) 1

DL-Methionine (CAS # 59-51-8)

Chemical Property:

Molecular Formula Chithunzi cha C5H11NO2S
Misa ya Molar 149.21
Kuchulukana 1.34
Melting Point 284°C (dec.)(lit.)
Boling Point 306.9±37.0 °C(Zonenedweratu)
Kuzungulira Kwapadera (α) -1～+1°(D/20℃)(c=8,HCl)
Nambala ya JECFA 1424
Kusungunuka kwamadzi 2.9 g/100 mL (20 ºC)
Kusungunuka Kusungunuka m'madzi, kusungunula asidi ndi kusungunula alkali, kusungunuka pang'ono mu 95% mowa, osasungunuka mu etha
Maonekedwe Crystalline ufa
Mtundu Choyera
Merck 14,5975
Mtengo wa BRN 636185
pKa 2.13 (pa 25 ℃)
Mkhalidwe Wosungira 2-8 ° C
Kukhazikika Wokhazikika. Zosagwirizana ndi ma oxidizing amphamvu.
Zomverera Zomverera ndi kuwala
Refractive Index 1.5216 (chiyerekezo)
MDL Mtengo wa MFCD00063096
Zakuthupi ndi Zamankhwala Mwala wonyezimira wonyezimira kapena ufa wa crystalline. Fungo lapadera. Kukoma kunali kokoma pang'ono. Malo osungunuka madigiri 281 (kuwola). 10% pH ya yankho lamadzi 5.6-6.1. Palibe kuzungulira kwa kuwala. Chokhazikika pakutentha ndi mpweya. Kusakhazikika kwa asidi amphamvu, kungayambitse demethylation. Kusungunuka m'madzi (3.3g / 100ml, madigiri 25), kusungunula asidi ndi kusungunula njira. Zosasungunuka kwambiri mu ethanol, pafupifupi osasungunuka mu etha
Gwiritsani ntchito Amagwiritsidwa ntchito ngati biochemical reagent

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Zizindikiro Zowopsa Xi - Zosangalatsa
Zizindikiro Zowopsa R33 - Kuopsa kwa zotsatira zowonjezera
R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu.
Kufotokozera Zachitetezo S24/25 - Pewani kukhudzana ndi khungu ndi maso.
S36 - Valani zovala zoyenera zodzitetezera.
S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala.
WGK Germany 2
Mtengo wa RTECS PD0457000
FLUKA BRAND F CODES 10-23
TSCA Inde
HS kodi 29304090

 

Mawu Oyamba

DL-Methionine si polar amino asidi. Katundu wake ndi woyera crystalline ufa, odorless, pang'ono owawa, sungunuka m'madzi.

 

DL-Methionine ikhoza kukonzedwa ndi njira zosiyanasiyana. Njira yomwe imagwiritsidwa ntchito kwambiri ndi kuphatikiza mankhwala. Makamaka, DL-methionine ikhoza kupangidwa ndi acylation reaction ya alanine yotsatiridwa ndi kuchepa.

 

Chidziwitso cha Chitetezo: DL-Methionine ndiyotetezeka kugwiritsa ntchito bwino komanso kudya pang'ono. Kudya mopitirira muyeso kungayambitse mavuto ena monga nseru, kusanza, ndi kutsegula m'mimba. Iyenera kugwiritsidwa ntchito mosamala kwa magulu ena a anthu, monga amayi apakati, makanda ndi ana aang'ono, ndi anthu omwe ali ndi chifuwa chachikulu.

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