5-formyl-2 4-dimethyl-1H-pyrrole-3-carboxylic acid（CAS# 253870-02-9)
| Nga Tohu Whakamate | Xi – Irritant |
Kupu Whakataki
Ko te waikawa 2,4-Dimethyl-5-aldehyde-pyrrole-3-carboxylic he pūhui waro.
Kounga:
- Te ahua: 2,4-dimethyl-5-aldehyde-pyrrole-3-carboxylic acid he karaihe taekore.
- Wairewa: 2,4-dimethyl-5-aldehyde-pyrrole-3-carboxylic acid he kore e rewa i roto i te wai, engari ka whakarewahia i roto i nga whakarewa waro penei i te ethanol, ether, etc.
Whakamahia:
- 2,4-Dimethyl-5-aldehyde-pyrrole-3-carboxylic acid ka taea te whakamahi hei waikano takawaenga me te rauemi mata mo te whakahiato waro.
Tikanga:
Ka taea te whakarite te waikawa 2,4-Dimethyl-5-aldehyde-pyrrole-3-carboxylic ma te tauhohe i te aniline me te waikawa malonic dianhydride. Ko nga waahanga tauhohenga motuhake e whai ake nei:
Ka konatunatua te aniline me te waikawa malonic dianhydride ka tauhohe ki te pāmahana e tika ana hei hanga i tetahi puhui amil.
Na, i raro i nga tikanga e tika ana, ka mahia he tauhohenga redox hei whakaheke i te puhui sulfyl ki te waikawa 2,4-dimethyl-5-aldehyde-pyrrole-3-carboxylic.
Mōhiohio Haumaru:
Nga korero haumaru motuhake o te waikawa 2,4-dimethyl-5-aldehyde-pyrrole-3-carboxylic: Tena tirohia te pepa raraunga haumaru o tenei puhui. I te wa e whakamahia ana, me whai koe i nga tikanga whakahaere haumaru o te taiwhanga, mau taputapu whakamarumaru whaiaro, whakarite kia pai te hau o te taiao whakamatautau, me te karo i te pa ki te kiri me nga kanohi. Me penapena ano hoki ki tetahi wahi matao, maroke, kia matara atu i te ahi me nga rawa muramura. Mena ka pakaru mai, me mahi nga tikanga e tika ana hei whakatutuki. Hei whakarite i te haumaru, rapua te awhina a te tohunga ngaio.
