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4,5-Dimethyl thiazole(CAS#3581-91-7)

Āhuatanga matū:

Tātai rāpoi C5H7NS
Molar Mass 113.18
Kiato 1.07 g/mL i te 25 °C (marama)
Te Whakarewa 83-84 C
Piro Pouri 158 °C/742 mmHg (marama)
Tohu Kohiko 124°F
Nama JECFA 1035
Kohu Kohu 3.46mmHg i te 25°C
Te ahua Te paura tioata
Te taumahatanga motuhake 1.070
BRN 105694
pKa pK1:3.73 (25°C,μ=0.1)
Tikanga Rokiroki I hiri ki te maroke, Te Pawera o te rūma
Taurangi Refactive n20/D 1.521(marama)
MDL MCD00005336
Āhuatanga ā-tinana, matū hoki Kiato 1.07
ira kohua 158 ° C. (742 torr)
taupū whakaata 1.52-1.522
ira hiko 51°C
Whakamahi Ka whakamahia hei taapiri kai

Taipitopito Hua

Tohu Hua

Waehere Morearea R10 – He mura ahi
R22 – He kino ki te horomia
R37/38 – He whakapataritari ki te punaha manawa me te kiri.
R41 – He kino kino ki nga kanohi
R36/37/38 – He whakapataritari ki nga kanohi, te punaha manawa me te kiri.
Whakaahuatanga Haumaru S16 – Kia matara atu i nga puna o te mura.
S26 – Mena ka pa ki nga kanohi, horoi tonu ki te nui o te wai me te rapu tohutohu hauora.
S39 – Mau whakamarumaru kanohi / kanohi.
S37/39 – Kia mau nga karapu tika me te whakamarumaru kanohi/kanohi
S36/37/39 – Mau kakahu whakamarumaru tika, karapu me te whakamarumaru kanohi/kanohi.
UN ID UN 1993 3/PG 3
WGK Tiamana 3
RTECS XJ4380000
Waehere HS 29349990
Te akomanga morearea 3
Roopu Tarapi III

 

Kupu Whakataki

Ko te 4,5-Dimethylthiazole he pūhui waro. Anei etahi o ona taonga, whakamahinga, tikanga hanga, me nga korero haumaru:

 

Kounga:

- Te ahua: Te wai kore tae, te totoka karaihe ranei.

- Wairewa: Ka whakarewahia i roto i te maha o nga whakarewa pararopi penei i te waipiro, te etera me te ketone.

- Pūmautanga: He āhua pūmau i te pāmahana rūma.

 

Whakamahia:

- Ka taea hoki te whakamahi hei whakatere rapa me te rapa vulcanizing hei whakapai ake i nga ahuatanga miihini o te rapa.

 

Tikanga:

- Ka taea te whakaputa 4,5-Dimethylthiazole ma te tauhohenga o te dimethyl sodium dithiolate me te 2-bromoacetone.

- Tauhohenga whārite: 2-bromoacetone + dimethyl dithiolate → 4,5-dimethylthiazole + konutai bromide.

 

Mōhiohio Haumaru:

- Ko te 4,5-Dimethylthiazole he puhui pararopi me karohia me nga tikanga whakahaere tika.

- Ko nga karapu whakamarumaru, nga karaehe me nga kakahu ka hiahiatia i te wa e whakamahia ana.

- A ape i te tango i ona kohu me te whakarite i te mahi i roto i te taiao hau pai.

- Mena ka pakaru ohorere nga kanohi, horoi tonu ki te nui o te wai me te rapu wawe i nga rongoa.

- Whakaorangia te 4,5-dimethylthiazole ki te waahi hauhautanga, maroke i tawhiti atu i nga waikura me nga waikawa kaha.


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