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Diacetyl 2-3-Diketo butane (CAS # 431-03-8) Featured duab
  • Diacetyl 2-3-Diketo butane (CAS # 431-03-8) 1

Diacetyl 2-3-Diketo butane (CAS # 431-03-8)

Chemical Property:

Molecular Formula C4H6O2
Molar Mass 86.09 ib
Qhov ntom 0.985g / mLat 20 ° C
Melting Point -4-2 ° C
Boling Point 88 ° C (lit.)
Flash Point 45 ° F
JECFA Number 408
Dej Solubility 200 g / L (20 ºC)
Solubility 200g / l
Vapor Siab 52.2 hli Hg (20 ° C)
Vapor Density 3 (vs huab cua)
Qhov tshwm sim Ua kua
Xim Ntshiab daj
Exposure Limit ACGIH: TWA 0.01 ppm; STEL 0.02 ppmNIOSH: TWA 5 ppb; STEL 25 PEB
Merck 14, 2966 ib
BRN 6 05398
Kev cia khoom Khaws ntawm +2 ° C txog +8 ° C.
Kev ruaj ntseg ruaj khov. Flamable. Incompatible nrog acids, muaj zog hauv paus, hlau, txo cov neeg ua haujlwm, oxidizing tus neeg sawv cev. Tiv thaiv los ntawm ya raws thiab dej. Nco ntsoov tsawg flashpoint.
Explosive txwv 2.4-13.0% (V)
Refractive Index n20/D 1.394 (lit.)
Physical thiab Chemical Properties Qhov ceev 0.981
Kub taw tes 88 ° C
Refractive Index 1.391-1.399
flash point 7 ° C
dej-soluble 200g / L (20 ° C)
Siv Siv rau kev npaj ntawm qab zib qab zib, yog lub ntsiab raw khoom rau zus tau tej cov pyrazine tsw

Product Detail

Khoom cim npe

Risk Codes R11 - Cov nplaim hluav taws kub heev
R20/22 - Ua phem los ntawm kev nqus pa thiab yog tias nqos.
R38 - Irritating rau ntawm daim tawv nqaij
R41 - Riam phom loj rau qhov muag
R36/38 - Kab mob rau qhov muag thiab tawv nqaij.
R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos.
R37/38 - Kab mob ua pa thiab tawv nqaij.
Kev nyab xeeb piav qhia S9 - Khaws lub thawv rau hauv qhov chaw muaj cua zoo.
S16 - Khaws kom deb ntawm qhov chaw hluav taws xob.
S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.
S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag
S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag.
S39 - Hnav qhov muag / ntsej muag tiv thaiv.
UN IDs UN 2346 3/PG 2
WGK Germany 2
RTECS EK2625 000
FLUKA BRAND F CODE 13
TSCA Yog lawm
HS Code 29141990 ib
Hazard Class 3
Packing Group II
Toxicity LD50 qhov ncauj hauv nas: 1580 mg / kg (Jenner)

 

Taw qhia

2,3-Butanedione yog ib qho organic compound. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm 2,3-butanedione:

 

Zoo:

- Cov tsos mob: 2,3-Butanedione yog cov kua tsis muaj xim nrog cov ntxhiab tsw.

- Solubility: Nws yog soluble hauv dej thiab hauv ntau cov kuab tshuaj organic.

- Kev ruaj ntseg: 2,3-butanedione yog qhov ruaj khov rau lub teeb thiab kub.

 

Siv:

- Cov ntawv thov kev lag luam: 2,3-butanedione feem ntau yog siv los ua cov khoom siv raw rau cov kuab tshuaj, coatings thiab yas additives.

- Cov tshuaj tiv thaiv tshuaj: Nws tuaj yeem siv los ua cov tshuaj tiv thaiv nruab nrab hauv cov organic synthesis, xws li kev sib txuas thiab oxidation ntawm ketones.

 

Txoj kev:

- Txoj kev sib xyaw ua ke yog kom tau 2,3-butanedione los ntawm oxidation ntawm butanedione. Qhov no yog ua tiav los ntawm reacting 2-butanone nrog oxygen nyob rau hauv lub xub ntiag ntawm ib tug catalyst.

 

Cov ntaub ntawv kev nyab xeeb:

- 2,3-Butanedione yog khaus, tshwj xeeb tshaj yog rau qhov muag thiab tawv nqaij. Tsis txhob kov ntawm daim tawv nqaij thiab qhov muag thaum siv, thiab yaug tam sim nrog dej ntau yog tias muaj kev sib cuag.

- Nws yog cov kua uas muaj nplaim taws thiab yuav tsum zam kom tsis txhob sib cuag nrog cov hluav taws kub thiab siv rau hauv qhov chaw uas muaj cua zoo.

-Thaum noj tshuaj los yog nqus pa, mus nrhiav kev kho mob tam sim ntawd.

 

  • Yav dhau los:
  • Tom ntej:
    • Sau koj cov lus ntawm no thiab xa tuaj rau peb

    cov khoom muaj feem xyuam