午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

?????????????

?????????????
????????????? ??? ???
?? ??:
379-95-3
???:
?????????????
???(??):
?????????????
???:
Dimethyl difluoromalonate
???(??):
DIMETHYL DIFLUOROMALONATE;diMethyl 2,2-difluoroMalonate;dimethyl difluoropropanedioate;dimethyl 2,2-difluoropropanedioate;1,3-dimethyl 2,2-difluoropropanedioate;2,2-difluoromalonic acid dimethyl ester;Propanedioic acid, 2,2-difluoro-, 1,3-diMethyl ester
CBNumber:
CB0206444
???:
C5H6F2O4
??? ??:
168.1
MOL ??:
Mol file

????????????? ??

???
-35℃ (approx)
?? ?
170-171℃
??
1.31 g/cm3 (20℃)
???
1.3721 (589.3 nm 20℃)
?? ??
under inert gas (nitrogen or Argon) at 2–8 °C
??? ??
??
??
Clear, colourless
EPA
Propanedioic acid, difluoro-, dimethyl ester (379-95-3)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xi
?? ?? IRRITANT
HS ?? 2917191090
????(GHS): GHS hazard pictogramsGHS hazard pictograms
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H226 ??? ?? ? ?? ??? ?? ?? 3 ??
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
??????:
P210 ?·???·??·????? ????? - ?? ???.
P280 ????/???/???/?????? ?????.
P301+P310 ???? ?? ????(??)? ??? ????.

????????????? C??? ??, ??, ??

??? ??

Dimethyl difluoromalonate is a colorless to pale yellow transparent liquid. It is an organic solvent that is used as a polymerization medium for the synthesis of polymers. It is also used as a raw material in the manufacture of surfactants and corrosion inhibitors. Dimethyl difluoromalonate can be copolymerized with other monomers to produce synthetic resins, which are used in the production of plastics, paints, and coatings.

??

Diethyl difluoromalonate is an important raw material and intermediate used in organic synthesis, pharmaceuticals and agrochemicals.

?? ??

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Incompatible with oxidizing agents.

????????????? ?? ?? ? ???

???

?? ??


????????????? ?? ??

???( 87)?? ??
??? ?? ??? ?? ?? ? ??
Shaanxi Dideu Medichem Co. Ltd
+86-029-81138252 +86-18789408387
1057@dideu.com China 3944 58
Capot Chemical Co.,Ltd.
+8613336195806
sales@capot.com China 29731 60
Shanghai Daken Advanced Materials Co.,Ltd
+86-2158073036
info@dakenam.com China 12739 58
Fluoropharm Co., Ltd.
+86-0571-85586753 +86-13336034509
sales@fluoropharm.com China 1445 60
career henan chemical co
+86-0371-86658258 +8613203830695
factory@coreychem.com China 29806 58
BEYOND INDUSTRIES (CHINA) LIMITED
+86-21-52699951; +8613917686115
sales@beyondindustriesgroup.com China 699 58
Hubei Ipure Biology Co., Ltd
+8613367258412
ada@ipurechemical.com China 10244 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34563 58
HONG KONG IPURE BIOLOGY CO.,LIMITED
86 18062405514 18062405514
ada@ipurechemical.com CHINA 3461 58
ANHUI WITOP BIOTECH CO., LTD
+8615255079626
eric@witopchemical.com China 23541 58

????????????? ?? ??:

Copyright 2019 ? ChemicalBook. All rights reserved