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

????-?????????????

????-?????????????
????-????????????? ??? ???
?? ??:
17838-69-6
???:
????-?????????????
???(??):
????-?????????????
???:
Ethyl alpha-Formyl Benzeneacetic Acid Ester
???(??):
Ipratropium Impurity 17;Ethyl -formylphenylacetate;Ethyl A-Formylphenylacetate;Ethyl -formyl-benzeneacetate;ethyl 3-oxo-2-phenylpropanoate;Ipratropium Bromide Impurity K;Ipratropium Bromide Impurity 11;Ipratropium bromide EP impurity 2;ETHYLO-FORMYLBENZENEACETICACIDESTER;Ethyl 3-oxo-2-Phenylpropanoate (>90%)
CBNumber:
CB11095488
???:
C11H12O3
??? ??:
192.21
MOL ??:
17838-69-6.mol

????-????????????? ??

???
50 °C
?? ?
135-140 °C(Press: 10 Torr)
??
1.108±0.06 g/cm3(Predicted)
???
?????(?? ???), DMSO(?? ???), ???(?? ???)
??? ??
??
??? ??
??? ??
?? ?? (pKa)
6.86±0.29(Predicted)
??
???? ?????
Dielectric constant
3.0(20℃)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
????(GHS): GHS hazard pictograms
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H302 ??? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P264, P270, P301+P312, P330, P501
H312 ??? ???? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P280,P302+P352, P312, P322, P363,P501
H332 ???? ??? ?? ?? ?? ?? ?? 4 ?? GHS hazard pictograms P261, P271, P304+P340, P312
??????:
P261 ??·?·??·???·??·...·????? ??? ????.
P264 ?? ??? ?? ??? ????.
P264 ?? ??? ?? ??? ????.
P270 ? ??? ??? ??? ???, ???? ???? ???.
P271 ?? ?? ??? ? ?? ???? ?????.
P280 ????/???/???/?????? ?????.
P301+P312 ??? ???? ??? ????(??)? ??? ????.
P302+P352 ??? ??? ??? ?? ????.
P304+P340 ???? ??? ??? ?? ??? ??? ???? ?? ??? ??? ????.
P330 ?? ?????.
P363 ?? ??? ??? ??? ?????.
P501 ...? ??? / ??? ?? ???.

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

????-????????????? ?? ?? ? ???

???

?? ??


????-????????????? ?? ??

???( 56)?? ??
??? ?? ??? ?? ?? ? ??
Standardpharm Co. Ltd.
86-714-3992388
overseasales1@yongstandards.com United States 14332 58
Career Henan Chemica Co
+86-0371-86658258 +8613203830695
laboratory@coreychem.com China 30233 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34563 58
China National Standard Pharmaceutical Corporation Limited
+8615391658522
overseasales@yongstandards.com China 11922 58
LEAPCHEM CO., LTD.
+86-852-30606658
market18@leapchem.com China 43340 58
Amadis Chemical Company Limited
571-89925085
sales@amadischem.com China 131957 58
QUALITY CONTROL SOLUTIONS LTD.
0755-66853366; 13670046396
ORDERS@QCSRM.COM China 24342 58
Tetranov Biopharm 13526569071
sales@leadmedpharm.com China 7906 64
Adamas Reagent, Ltd. 400-6009262 16621234537
chenyj@titansci.com China 14103 59
S.Z. PhyStandard Bio-Tech. Co., Ltd. 0755-4000505016 13380397412
3001272453@qq.com China 5047 50

????-????????????? ?? ??:

Copyright 2019 ? ChemicalBook. All rights reserved