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

?????????

?????????
????????? ??? ???
?? ??:
3173-56-6
???:
?????????
???(??):
????????;?????????;?? ??????
???:
Benzyl isocyanate
???(??):
(Isocyanatomethyl)benzene;1-(isocyanatomethyl)benzene;Benzyl isocyate;BENZYL ISOCYANATE;BenzylIsocyanate>Benzylisocyanate,98%;Benzyl isocyanate 98%;Benzyl isocyanate, 99+%;Isocyanatomethyl-benzene;(isocyanatomethyl)-benzen
CBNumber:
CB1714526
???:
C8H7NO
??? ??:
133.15
MOL ??:
3173-56-6.mol
MSDS ??:
SDS

????????? ??

???
259-261 °C(Solv: acetic acid (64-19-7))
?? ?
101-104 °C/33 mmHg (lit.)
??
1.078 g/mL at 25 °C (lit.)
???
n20/D 1.526(lit.)
???
113 °F
?? ??
Inert atmosphere,2-8°C
???
?????(?? ???), ???(?? ???)
??? ??
??
??
????~???
???
?? ???????.
??
Moisture Sensitive
BRN
636508
CAS ??????
3173-56-6(CAS DataBase Reference)
NIST
Benzyl isocyanate(3173-56-6)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xn,T
?? ???? ?? 10-36/37/38-42/43-23/24/25
????? 23-26-36/37-36/37/39-16
????(UN No.) UN 3080 6.1/PG 2
WGK ?? 3
F ?????? 10-21
?? ?? 6.1
???? II
HS ?? 29291090
????(GHS): GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H226 ??? ?? ? ?? ??? ?? ?? 3 ??
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H317 ????? ?? ??? ??? ? ?? ?? ??? ?? ?? 1 ?? GHS hazard pictograms P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H334 ?? ? ????? ??, ?? ?? ?? ?? ?? ??? ? ?? ??? ??? ?? ?? 1 ?? GHS hazard pictograms P261, P285, P304+P341, P342+P311,P501
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
??????:
P210 ?·???·??·????? ????? - ?? ???.
P233 ??? ??? ?????. ??? ??? ? ?? ?? ??? ???? ?????.
P240 ??? ????? ?? ? ??????.
P280 ????/???/???/?????? ?????.
P303+P361+P353 ??(?? ????)? ??? ??? ?? ??? ??? ????? ??? ?? ????/?????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
2
3 0

????????? MSDS


Benzyl isocyanate

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

??? ??

CLEAR COLOURLESS TO FAINTLY YELLOW LIQUID

??

benzyl isocyanate is a natural product found in Simicratea welwitschii with data available.?

??

Benzyl isocyanate, is used as a protected ammonia equivalent in the stereo selective ring-opening of chiral 2,3-epoxy alcohols (from Sharpless asymmetric epoxidation). The key step in the sequence involves intramolecular cyclization of the carbamate intermediate. It is also used in a multicomponent, stereospecific synthesis of 1,3-oxazinane-2,4-diones employing an Al-salph complex.

?? ??

Benzyl isocyanate inhibits the formation of benzo[a]pyrene (BP)-DNA adduct and posses chemopreventive properties.

Synthesis

The conversion of benzyl azide to benzyl isocyanate (Scheme 1) was selected as the model reaction and it was performed both under conventional conditions and under MW irradiation. Various solvents were compared at a number of temperatures thanks to the versatility of the SynthWave reactor, which provides multiple-sample racks. Experiments were performed at 90, 70 and 50 °C at 14.5 bar of CO2 pressure.
Synthesis of benzyl isocyanate
Scheme 1: Synthesis of benzyl isocyanate.
One-pot sequential synthesis of isocyanates and urea derivatives via a microwave-assisted Staudinger–aza-Wittig reaction

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

???

?? ??


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

???( 260)?? ??
??? ?? ??? ?? ?? ? ??
ATK CHEMICAL COMPANY LIMITED
+undefined-21-51877795
ivan@atkchemical.com China 33024 60
career henan chemical co
+86-0371-86658258 +8613203830695
sales@coreychem.com China 29856 58
Xiamen AmoyChem Co., Ltd
+86-86-5926051114 +8615060885618
sales@amoychem.com China 6383 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 22963 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427
sales@conier.com China 49732 58
SIMAGCHEM CORP
+86-13806087780
sale@simagchem.com China 17346 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34563 58
Hefei Hirisun Pharmatech Co., Ltd
+8615056975894
shawn@hirisunpharm.com CHINA 9911 58
Dayang Chem (Hangzhou) Co.,Ltd.
+86-0571-88938639 +8617705817739
info@dycnchem.com China 52849 58
CD Chemical Group Limited
+8615986615575
info@codchem.com China 20342 58

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

Copyright 2019 ? ChemicalBook. All rights reserved