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ọja

2-Methyl-3,4-Pentadienoic Acid Ethyl Ester(CAS#60523-21-9)

Ohun-ini Kemikali:

Fọọmu Molecular C8H12O2
Molar Mass 140.18
iwuwo 0.886± 0.06 g/cm3 (Asọtẹlẹ)
Ojuami Boling 172.6± 10.0 °C(Asọtẹlẹ)
Nọmba JECFA 353
Ti ara ati Kemikali Properties Oju omi farabale 160 ℃ tabi 88 ~ 90 ℃(7333Pa). O jẹ eso, pẹlu berries, pears ati apples.

Alaye ọja

ọja Tags

 

Ọrọ Iṣaaju

Ethyl 2-methyl-3,4-pentadienoic acid jẹ agbo-ara Organic, nigbagbogbo ti a pe ni MEHQ. Atẹle jẹ ifihan si iseda, lilo, ọna iṣelọpọ ati alaye ailewu ti MEHQ:

 

Didara:

- Irisi: MEHQ jẹ awọ ti ko ni awọ si ina omi ofeefee.

- Solubility: MEHQ jẹ tiotuka ni diẹ ninu awọn nkanmimu Organic gẹgẹbi ethers, alcohols ati ketones, ati insoluble ninu omi.

 

Lo:

- Antioxidants: MEHQ jẹ lilo pupọ bi ẹda ara-ara ni roba ati awọn ọja ṣiṣu lati fa igbesi aye rẹ pọ si labẹ iwọn otutu giga ati awọn ipo itọsi UV.

- Awọn imuduro ina: MEHQ tun lo ni awọn iboju oju-oorun ati awọn ọja sunscreen nitori awọn ohun-ini sooro UV rẹ.

 

Ọna:

Ọna ti o wọpọ ti igbaradi ti MEHQ jẹ nipasẹ esterification ti 2-methyl-3,4-pentadienic acid (Mesaconic acid) pẹlu ethanol, nigbagbogbo labẹ awọn ipo ekikan.

 

Alaye Abo:

MEHQ jẹ nkan majele ti o le jẹ eewu ilera ti o ba farahan ati fa simu. Eyi ni diẹ ninu awọn iṣọra aabo:

- Wọ ohun elo aabo ti o yẹ, gẹgẹbi awọn oju aabo ati awọn ibọwọ, nigba lilo.

- Lo ni agbegbe ti o ni afẹfẹ daradara ki o yago fun fifun awọn eefin rẹ.

- Fipamọ sinu eiyan airtight, kuro lati ina ati awọn iwọn otutu giga.

 


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