4-Morpholineethanesulfonic Acid, Dawb Powder (CAS: 4432-31-9)

 

1. Muaj peev xwm:

Txog 200 tons hauv ib xyoos, hauv Tshuag.

2. Khoom:

MES yog hmoov dawb.

Soluble nyob rau hauv dej, me ntsis soluble nyob rau hauv polar organic solvents, insoluble nyob rau hauv non{0}}polar solvents.

3. Kev siv:

Calcium xab npum dispersant.

 

 

Chemical Properties:

Melting point	>300℃(lit.)
Boiling point	102 degree
ceev	1.208 (kwv yees)
Refractive Index	1.5500 (kwv yees)
cia temp.	2-8 degree
solubility	H2O: 0.5 M ntawm 20 degree, meej
daim ntawv	Hmoov
pka ua	pKa ntawm 0.1M ionic: 0 degree, 6.38; 20 degree, 6.15; 37 qib, 5.98; pKa1 1.99; pKa2 6.21; pKa /℃-0.011
xim	Dawb
PH	2.5-4.0 (25℃hauv zoo)
PH Range	5.5 - 6.7

 

Daim ntawv qhia Specification:

TEST	Specification
Qhov tsos (xim)	Dawb
Qhov tshwm sim (Form)	Hmoov
Solubility (xim)	Tsis muaj xim
Solubility (Turbidity) 20 g thiab 80 ml dej	Ntshiab
Infrared spectrum	Raws li tus qauv
Dej (los ntawm Karl Fischer)	Tsawg dua lossis sib npaug li 1.0%
UV Absorbance 290nm    20% W/W	Tsawg dua los yog sib npaug li 0.05
Heavy Metals (raws li Lead)	Tsawg dua lossis sib npaug li 5 ppm
Recommended Retest Period 2 xyoo	-------------------------
Purity (Titr. los ntawm NAOH) anhyd.	Ntau dua lossis sib npaug li 99%

 

 

1. Kev ua haujlwm tsis zoo heev
Nruab nrab pH ntau yam:

Qhov tsis zoo ntawm MES yog pH 5.5-6.7, uas yog tshwj xeeb tshaj yog haum rau kev sim xav tau hauv cov cheeb tsam tsis muaj zog acidic.
Muaj zog buffering muaj peev xwm:

Nyob ze rau nws tus nqi pKa (kwv yees li 6.1), MES nthuav tawm cov peev txheej zoo heev thiab tuaj yeem tswj cov pH tus nqi ntawm cov tshuaj.

 

2. Tsawg UV nqus
Tsawg cuam tshuam:

Kev nqus ntawm MES hauv cheeb tsam ultraviolet (< 260 nm) is extremely low, and will not interfere with the ultraviolet detection of proteins, nucleic acids and other biomolecules, especially suitable for spectral analysis and chromatography experiments.

 

3. Zoo solubility
Cov dej solubility siab:

MES yog yooj yim soluble nyob rau hauv dej, thiab solubility yog hais txog 0.5 M (kwv yees 100 g / L) ntawm 25 degree, uas yog ib qho yooj yim los npaj siab concentration buffer.
Tau tshaj nrog cov qauv lom neeg:

Nws solubility ua rau nws sib haum nrog feem ntau cov qauv lom neeg tsis ua rau sedimentation lossis cuam tshuam.

 

4. Tshuaj stability
Zoo thermal stability:

MES ruaj khov ntawm chav tsev kub, tuaj yeem tiv taus qhov kub thiab txias, thiab tsim nyog rau kev sim ua kom sov.
Muaj zog oxidation tsis kam:

MES tsis yooj yim rau oxidized thiab tuaj yeem nyob ruaj khov hauv - kev sim ntev.

 

5. Tsawg toxicity
Zoo biocompatibility:

MES muaj toxicity tsawg rau cov hlwb thiab cov enzymes, thiab tsim nyog rau kev sim tshuaj lom neeg xws li kab lis kev cai ntawm tes thiab kev txiav txim siab enzyme.
Ib puag ncig tus phooj ywg:

Nws cov toxicity tsawg thiab biodegradability ua rau nws cuam tshuam rau ib puag ncig tsawg.

 

 

 

 

 

 

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