成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

L-????? ?

L-????? ?
L-????? ? ??? ???
?? ??:
56-84-8
???:
L-????? ?
???(??):
L-??????;??????;?????;???????
???:
L-Aspartic acid
???(??):
ASPARTIC ACID;ASP;ASPARTATE;L-ASP;H-ASP-OH;Aspartic;Asparaginic acid;(S)-2-AMINOSUCCINIC ACID;L-Asp-OH;L-ASPARGINE
CBNumber:
CB3141599
???:
C4H7NO4
??? ??:
133.1
MOL ??:
56-84-8.mol
MSDS ??:
SDS

L-????? ? ??

???
>300 °C (dec.)(lit.)
??
25 º (c=8, 6N HCl)
?? ?
245.59°C (rough estimate)
??
1.66
?? ??
430kg/m3
FEMA
3656 | L-ASPARTIC ACID
???
1.4540 (estimate)
?? ??
Store below +30°C.
???
H2O: 5 mg/mL
??? ??
??
?? ?? (pKa)
1.99(at 25℃)
??
???
??????(pH)
2.5-3.5 (4g/l, H2O, 20℃)
??
??
optical activity
[α]20/D +24.7±1°, c = 5% in 5 M HCl
???? ??
synthetic
?? ??
?? ??
???
5 g/L (25 ºC)
?? ??(λmax)
λ: 260 nm Amax: 0.20
λ: 280 nm Amax: 0.10
JECFA Number
1429
Merck
14,840
BRN
1723530
???
????. ?? ??. ?? ???? ???? ????.
InChIKey
CKLJMWTZIZZHCS-REOHCLBHSA-N
LogP
-0.67
CAS ??????
56-84-8(CAS DataBase Reference)
NIST
Aspartic acid(56-84-8)
EPA
Aspartic acid (56-84-8)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xi,Xn
?? ???? ?? 36-36/37/38-20/21/22
????? 26-24/25-22-36
WGK ?? 2
RTECS ?? CI9098500
F ?????? 10
TSCA Yes
?? ?? IRRITANT
HS ?? 29224995
?? ?? ??? 56-84-8(Hazardous Substances Data)
?? LD50 intraperitoneal in mouse: 6gm/kg
???? ?? KE-01221
????(GHS): GHS hazard pictograms
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H302 ??? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P264, P270, P301+P312, P330, P501
??????:
P264 ?? ??? ?? ??? ????.
P264 ?? ??? ?? ??? ????.
P270 ? ??? ??? ??? ???, ???? ???? ???.
P301+P312 ??? ???? ??? ????(??)? ??? ????.
P501 ...? ??? / ??? ?? ???.
NFPA 704
1
1 0

L-????? ? MSDS


L-Aminosuccinic acid

L-????? ? C??? ??, ??, ??

????

? (1) ?? : ? ?? 1g? 1N ?? 20mL? ?? ?? ???? ????? ??.

??(2) ?? : ? ??? ?????? pH? 2.5~3.5??? ??.

??(3) ???? : ? ?? 8g? ??? ?? 6N ??? ?? 100mL? ?? ? ?? ???? ????, ?? ???? ??? ?, =+24.0~+26.0°??? ??.

??(4) ??? : ? ?? 0.07g? ??? ??????? ?? ??? ?, ? ?? 0.01N ?? 0.2mL? ???? ? ????? ??.

??(5) ?? : ? ??? ?????? ?? ??? ?, ? ?? 4.0ppm ????? ??.

??(6) ? : ? ?? 5.0g? ??? ??????? ?? ?????????????? ?? ??? ?, ? ?? 5.0ppm ????? ??.

????

? (1) ? ??? ???(1→1,000) 5mL? ??????(1→50) 1mL? ??? ????? 3?? ??? ? ???? ????.

??(2) ? ??? 1N ??(1→25) 5mL? ???????? 1mL? ?? ? ??? ??? ??? ??? ????.

???

? ? ?? ? 0.3g? ??? ?? ??? 6mL? ??? ???(?????) 50mL? ??? 0.1N ???????? ????(??? : ?????????????? 1mL). ???? ?? ??? ??? ?? ???? ??? ???. ?? ?? ???? ???? ??.

0.1N ?????? 1mL = 13.310mg C4H7NO4

?????

? ? ??? ?????? 0.1% ????? ??.

??

L-Aspartic acid is the L-form of the aspartic acid. It is one of the 20 amino acids that used in the protein synthesis. It is the non-essential amino acids for humans as it can be synthesized in vivo. It is important in the synthesis of other amino acids and some nucleotides, and is a metabolite in the citric acid and urea cycles. In animals, it may be used as a neurotransmitter. It can be chemically synthesize from the diethyl sodium phthalimidomalonate. Currently, almost all the aspartic acids are manufactured in China. Its application include being used as low calorie sweetener (as the part of the aspartame), scale and corrosion inhibitor, and in resins. One of its growing applications is for the manufacturing of biodegradable superabsorbent polymer, polyaspartic acid. It can also be used in fertilizer industry to improve water retention and nitrogen uptake.

??? ??

Colorless crystals. Soluble in water; insoluble in alcohol and ether. Optically active. dl-aspartic acid.

??? ??

Solubility 0.5 (25 ℃) g/100 g H2O, pI 2.98, dissociation constants: pK1 2.1, pK2 3.86 (β-COOH), pK3 9.82    

??

Dietary sources
Aspartic acid is not an essential amino acid, which means that it can be synthesized from central metabolic pathway intermediates in humans. Aspartic acid is found in :
Animal sources : luncheon meats, sausage meat, wild game
Vegetable sources: sprouting seeds, oat flakes, avocado,
asparagus , young sugarcane, and molasses from sugar beets.
Chemical synthesis
Racemic aspartic acid can be synthesized from diethyl sodium phthalimido malonate, (C6H4(CO)2NC(CO2Et)2).
The major disadvantage of the above technique is that equimolar amounts of each enantiomer are made. Using biotechnology it is now possible to use immobilized enzymes to create just one type of enantiomer owing to their stereo specificity. Aspartic acid is made synthetically using ammonium fumarate and aspartase from E.coli, E.coli usually breaks down the aspartic acid as a nitrogen source but using excess amounts of ammonium fumarate a reversal of the enzyme's job is possible, and so aspartic acid is made to very high yields, 98.7 mM from 1 M.

??

Aspartic acid was first discovered in 1827 by Plisson, derived from asparagine, which had been isolated from asparagus juice in 1806, by boiling with a base.

??

L-aspartic acid is used as a dietary supplement, it can be blended with minerals to make compounds like potassium aspartate, copper aspartate, manganese aspartate, magnesium aspartate, zinc aspartate and more. Increasing the absorption, and hence utilization potentials, of these minerals via the addition of aspartate induces certain health benefits. Many athletes use L-aspartic acid-based mineral supplements orally to enhance their performance capacities. Aspartic acid and glutamic acid play important roles as general acids in enzyme active centers, as well as in maintaining the solubility and ionic character of proteins. It can help promote a robust metabolism, and is sometimes used to treat fatigue and depression. Aspartic acid is used as a component of parenteral and enteral nutrition. In pharmaceutical agents aspartic acid is used as an ammoniac detoxicating agent, hepar function accelerator and fatigue refresher.

??

ChEBI: The L-enantiomer of aspartic acid.

?? ??

To request documentation for this product, please contact Customer Support and select ‘Product Documentation′. Please note that access to the documentation for this product requires a confidentiality disclosure agreement.

???

Low toxicity.

???? ??

Endogenous NMDA receptor agonist.

Safety Profile

Low toxicity by intraperitoneal route. When heated to decomposition emits toxic fumes of NOx.

L-????? ? ?? ?? ? ???

???

?? ??


L-????? ? ?? ??

???( 1035)?? ??
??? ?? ??? ?? ?? ? ??
NINGBO CREATE-BIO ENGINEERING CO.,LTD
+8613906695486
13906695486@126.com China 1 58
Hebei Weibang Biotechnology Co., Ltd
+8615531157085
abby@weibangbio.com China 8804 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325
sales1@chuanghaibio.com China 5887 58
Shandong Juchuang Chemical Co., LTD
+16837774622
admin@juchuangchem.com China 295 58
Shaanxi TNJONE Pharmaceutical Co., Ltd
+8618092446649
sarah@tnjone.com China 1143 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651
admin@zlchemi.com China 3692 58
Hebei Shengyang Water Conservancy Engineering Co., Ltd.
+8615373025980
clara@hbshengyang.com China 895 58
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
+8615350851019
admin@86-ss.com China 1001 58
Capot Chemical Co.,Ltd.
+86-(0)57185586718 +86-13336195806
sales@capot.com China 29792 60
Shanghai Daken Advanced Materials Co.,Ltd
+86-371-66670886
info@dakenam.com China 19902 58

L-????? ? ?? ??:

Copyright 2019 ? ChemicalBook. All rights reserved