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Diacetyl 2-3-Diketo butane (CAS#431-03-8)
  • 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 Misa 86.09
Kuchulukana 0.985g/mLat 20°C
Melting Point -4–2 °C
Boling Point 88°C (lat.)
Pophulikira 45°F
Nambala ya JECFA 408
Kusungunuka kwamadzi 200 g/L (20 ºC)
Kusungunuka 200g/l
Kuthamanga kwa Vapor 52.2 mm Hg (20 °C)
Kuchuluka kwa Vapor 3 (vs mpweya)
Maonekedwe Madzi
Mtundu Yellow yoyera
Malire Owonetsera ACGIH: TWA 0.01 ppm; STEL 0.02 ppmNIOSH: TWA 5 ppb; Chithunzi cha STEL 25
Merck 14,2966
Mtengo wa BRN 605398
Mkhalidwe Wosungira Sungani pa +2 ° C mpaka +8 ° C.
Kukhazikika Wokhazikika. Zoyaka. Zosagwirizana ndi zidulo, maziko amphamvu, zitsulo, zochepetsera, oxidizing agents. Tetezani ku chinyezi ndi madzi. Onani otsika flashpoint.
Zophulika Malire 2.4-13.0% (V)
Refractive Index n20/D 1.394(lit.)
Zakuthupi ndi Zamankhwala Kuchulukana kwa 0.981
kutentha kwa 88°C
refractive index 1.391-1.399
kutentha kwa 7°C
madzi osungunuka 200g/L (20°C)
Gwiritsani ntchito Ntchito yokonza zonona kukoma, ndi waukulu zopangira kupanga pyrazine kukoma

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Zizindikiro Zowopsa R11 - Yoyaka Kwambiri
R20/22 - Zowopsa pokoka mpweya komanso ngati zitamezedwa.
R38 - Zowawa pakhungu
R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso
R36/38 - Zokwiyitsa maso ndi khungu.
R20/21/22 - Zowopsa pokoka mpweya, kukhudzana ndi khungu komanso kumeza.
R37/38 - Zokwiyitsa dongosolo la kupuma ndi khungu.
Kufotokozera Zachitetezo S9 - Sungani chidebe pamalo abwino mpweya wabwino.
S16 - Khalani kutali ndi magwero oyatsira.
S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala.
S37/39 - Valani magolovesi oyenera komanso chitetezo chamaso / kumaso
S36/37/39 - Valani zovala zodzitchinjiriza zoyenera, magolovesi ndi chitetezo chamaso / kumaso.
S39 - Valani chitetezo chamaso / kumaso.
Ma ID a UN UN 2346 3/PG 2
WGK Germany 2
Mtengo wa RTECS EK2625000
FLUKA BRAND F CODES 13
TSCA Inde
HS kodi 29141990
Kalasi Yowopsa 3
Packing Group II
Poizoni LD50 pamlomo makoswe: 1580 mg/kg (Jenner)

 

Mawu Oyamba

2,3-Butanedione ndi organic compound. Zotsatirazi ndizofotokozera za katundu, ntchito, njira zokonzekera ndi chitetezo cha 2,3-butanedione:

 

Ubwino:

- Maonekedwe: 2,3-Butanedione ndi madzi opanda mtundu okhala ndi fungo lopweteka.

- Kusungunuka: Kusungunuka m'madzi komanso muzosungunulira zambiri.

- Kukhazikika: 2,3-butanedione imakhala yokhazikika pakuwala komanso kutentha.

 

Gwiritsani ntchito:

- Kugwiritsa ntchito mafakitale: 2,3-butanedione nthawi zambiri imagwiritsidwa ntchito ngati zosungunulira, zokutira ndi zowonjezera zapulasitiki.

- Chemical reactions: Itha kugwiritsidwa ntchito ngati njira zoyambira mu kaphatikizidwe ka organic, monga kaphatikizidwe ndi makutidwe ndi okosijeni a ketone.

 

Njira:

- Njira yopangira kaphatikizidwe ndiyo kupeza 2,3-butanedione ndi okosijeni wa butanedione. Izi zimatheka pochita 2-butanone ndi mpweya pamaso pa chothandizira.

 

Zambiri Zachitetezo:

- 2,3-Butanedione imakwiyitsa, makamaka m'maso ndi pakhungu. Pewani kukhudzana ndi khungu ndi maso mukamagwiritsa ntchito, ndipo muzimutsuka nthawi yomweyo ndi madzi ambiri ngati akhudzana.

- Ndi madzi oyaka moto ndipo amayenera kupewedwa kuti asakhumane ndi poyatsira moto ndipo amagwiritsidwa ntchito pamalo olowera mpweya wabwino.

- Ngati walowetsedwa mwangozi kapena kupumira mpweya, pitani kuchipatala mwamsanga.

 

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