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2-??

2-??
2-?? ??? ???
?? ??:
627-21-4
???:
2-??
???(??):
2-???;2-??
???:
2-PENTYNE
???(??):
2-PENTYNE;pent-2-yne;Valerylene;CH3C≡CCH2CH3;2-Pentyne>2-PENTYNE 98%;2-Pentyne,98+%;C2H5CequivCCH3;2-Pentyne, 98% 5GR;ETHYLMETHYLACETYLENE
CBNumber:
CB5218567
???:
C5H8
??? ??:
68.12
MOL ??:
627-21-4.mol
MSDS ??:
SDS

2-?? ??

???
-109 °C (lit.)
?? ?
56-57 °C (lit.)
??
0.71 g/mL at 25 °C (lit.)
???
393 mm Hg ( 37.7 °C)
???
n20/D 1.404(lit.)
???
−23 °F
?? ??
Flammables area
???
soluble in Ether,Alcohol,Benzene
??? ??
??
Specific Gravity
0.711
??
????~???
????
1.2-8.8%(V)
BRN
1696938
CAS ??????
627-21-4(CAS DataBase Reference)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? F,Xi
?? ???? ?? 11-36/37/38
????? 16-26-36/37/39
????(UN No.) UN 3295 3/PG 2
WGK ?? 3
F ?????? 10-23
?? ?? 3
???? II
HS ?? 29012900
???? ?? KE-28121
????(GHS): GHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H225 ???? ?? ? ?? ??? ?? ?? 2 ?? GHS hazard pictograms P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
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 ?·???·??·????? ????? - ?? ???.
P302+P352 ??? ??? ??? ?? ????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
3
2 0

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

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clear colorless to slightly yellow liquid

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2-Pentyne was used to test the catalytic activity of nanoparticles of palladium supported on bacterial biomass, bio-Pd.

Safety Profile

A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. Solutions with silver perchlorate explode on contact with mercury. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

It is stood with, then distilled at low pressure from sodium or NaBH4. [Beilstein 1 III 958, 1 IV 992.]

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