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structure of 74-99-7

Propyne(CAS 74-99-7)

CAS No.: 74-99-7 Brand: MolBest
M. Ft.: C3H4 Cat. No: G4255254
M. Wt.: 40.06 MDL: No record
Storage: 2-8°C Use: For laboratory research use only
HS CODE: 2901299090 UN No.: UN 1954
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1mol/L in Heptane(ca. 4%),Safeseal
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SafeSeal 25ML In Stock 10 USD
1mol/L in Heptane(ca. 4%),Safeseal
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SafeSeal 100ML In Stock 27 USD
1mol/L in Heptane(ca. 4%),Safeseal
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SafeSeal 500ML In Stock 50 USD
1mol/L in Heptane(ca. 4%),Safeseal
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SafeSeal 1L In Stock 91 USD
1mol/L in N,N-Dimethylformamide(ca. 4%),Safeseal
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SafeSeal 25ML In Stock 4 USD
1mol/L in N,N-Dimethylformamide(ca. 4%),Safeseal
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SafeSeal 100ML In Stock 17 USD
1mol/L in N,N-Dimethylformamide(ca. 4%),Safeseal
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SafeSeal 500ML In Stock 50 USD
1mol/L in N,N-Dimethylformamide(ca. 4%),Safeseal
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SafeSeal 1L In Stock 91 USD
1mol/L in Tetrahydrofuran(ca. 5%),Safeseal
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SafeSeal 25ML In Stock 10 USD
1mol/L in Tetrahydrofuran(ca. 5%),Safeseal
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SafeSeal 100ML In Stock 17 USD
1mol/L in Tetrahydrofuran(ca. 5%),Safeseal
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SafeSeal 500ML In Stock 50 USD
1mol/L in Tetrahydrofuran(ca. 5%),Safeseal
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SafeSeal 1L In Stock 91 USD
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Applications of 74-99-7

Propyne has various applications across different fields:

  • Organic Synthesis: As a three-carbon building block, propyne is utilized in synthesizing complex organic molecules, including pharmaceuticals and agrochemicals.
  • Rocket Fuel: Research indicates that propyne could serve as an effective rocket fuel when combined with liquid oxygen due to its high specific impulse and moderate boiling point, making it easier to store compared to cryogenic fuels.
  • Industrial Uses: It is used in gas welding and as an intermediate in chemical manufacturing processes.

Physical and chemical properties of 74-99-7

Appearance of Characters

gas

Boiling Point

-10 °F

Decomposition

... Can decompose explosively at 4.5 to 5.6 atmospheres of pressure.

Density

1.41(relative gas density)

Exact Mass

40.03130

Flash Point

NA (Gas)

Index of Refraction

Index of refraction = 1.3863 at -40 °C/D

LogP

log Kow = 0.94

Melting Point

-153 °F

Molecular Formula

C3H4

Molecular Weight

40.06390

Odor

Sweet odor

Solubility

Insoluble

Vapour density

1.41

Vapour Pressure

5.2 atm

Water Solubility

3,640 mg/L at 20 °C (quoted, Verschueren, 1983)

Retrosynthesis analysis of 74-99-7

  • Route#1

    Cas:503-17-3
    Cas:74-99-7
  • Route#2

    Cas:460-12-8
    Cas:74-99-7
  • Route#3

    Cas:460-19-5
    Cas:503-17-3
    Cas:74-99-7

Q&A for CAS 74-99-7

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Download SDS of 74-99-7

Pictograms

Signal Word

Danger

Hazard Statements

H220 Extremely flammable gas
H280 Contains gas under pressure; may explode if heated
H335 May cause respiratory irritation
H336 May cause drowsiness or dizziness

Safety Data Sheet

Download COA of 74-99-7

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Operate under the ISO 9001 system