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Guaiacol (CAS#90-05-1)

Thepa ea Lik'hemik'hale:

Foromo ea limolek'hule C7H8O2
'Misa oa Molar 124.14
Botenya 1.129 g/mL ho 25 °C (hote.)
Melting Point 26-29 °C (hote.)
Boling Point 205 °C (hote.)
Flash point 180°F
JECFA Nomoro 713
Ho qhibiliha ha Metsi 17g/L (15 ºC)
Solubility E qhibiliha hanyane ka metsing le benzene. E qhibiliha ka glycerin. E kopantsoe le ethanol, ether, chloroform, oli, glacial acetic acid.
Khatello ea Mouoane 0.11 mm Hg (25 °C)
Tekano ea Mouoane 4.27 (khahlanong le moea)
Ponahalo Mokelikeli
Mmala Ha e na 'mala ho isa ho mosehla o khanyang
Merck 14,4553
BRN 508112
pKa 9.98(ho 25℃)
PH 5.4 (10g/l, H2O, 20℃)
Boemo ba polokelo 2-8°C
Botsitso E tsitsitseng, empa moea le khanya e bonolo. E tukang. Ha e lumellane le lisebelisoa tse matla tsa oxidizing.
E hloahloa Ha A na Moeeng
Refractive Index n20/D 1.543(lit.)
MDL MFCD00002185
Thepa ea 'Mele le ea Lik'hemik'hale Likristale tse tšoeu kapa tse mosehla kapa tse se nang 'mala ho isa ho bosehla bo bonaletsang ba oli. Ho na le monko o monate o khethehileng.
Sebelisa Bakeng sa ho qaptjoa ha dae, hape e sebelisoa e le li-reagents tsa tlhahlobo

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Likhoutu tsa Kotsi R22 – E kotsi ha e kwetswe
R36/38 – Ho hlohlona mahlong le letlalong.
Tlhaloso ea Tšireletseho 26 - Ha u kopana le mahlo, hlatsoa hang-hang ka metsi a mangata 'me u batle keletso ea bongaka.
Li-ID tsa UN 2810
WGK Jeremane 1
RTECS SL7525000
TSCA Ee
Khoutu ea HS 29095010
Tsebiso ea Kotsi Chefo/ E tenang
Sehlopha sa Likotsi 6.1(b)
Sehlopha sa ho paka II
Chefo LD50 ka molomo ho likhoto: 725 mg / kg (Taylor)

 

Selelekela

Guaiacol ke motsoako oa manyolo. Se latelang ke selelekela sa thepa, tšebeliso, mekhoa ea ho lokisa le tlhaiso-leseling ea polokeho ea guaiacol luff:

 

Boleng:

- Ponahalo: Guaiac ke mokelikeli o pepeneneng o nang le monko o khethehileng.

- Sollubility: E qhibiliha ka har'a lihlapolli tse ngata tsa tlhaho, joalo ka ethanol le ether.

 

Sebelisa:

- Likokoana-hloko: Guaiacol ka linako tse ling e sebelisoa e le motsoako oa chefo e bolaeang likokoanyana.

 

Mokhoa:

Guaiacol e ka ntšoa ka lehong la guaiac (semela) kapa ea etsoa ka methylation ea cresol le catechol. Mekhoa ea ho kopanya e kenyelletsa karabelo ea p-cresol e nang le chloromethane e hlahisoang ke alkali kapa p-cresol le formic acid tlasa catalysis ea acid joalo-joalo.

 

Lintlha tsa Tšireletseho:

- Mouoane oa Guaiacol oa halefisa 'me o ka ba le phello e khopisang mahlong, letlalong le tsamaisong ea ho hema. Apara liaparo tse sireletsang mahlo, liatlana le maske ha ho hlokahala.

- E lokela ho bolokoa hole le mollo le mocheso o phahameng, 'me e bolokoe ka sejaneng se sa keneleng moea ho qoba ho kopana le li-oxidants.

- Ha o sebelisa guaiacol sebakeng se nang le moea o motle 'me u qobe ho hema mouoane oa eona ka nako e telele.

- Tšoara motsoako ka nepo ho latela mekhoa e nepahetseng ea ts'ebetso le tataiso ea ts'ebetso ea polokeho. Tabeng ea ho kopana le letlalo kapa tšebeliso, hlatsoa hang-hang ka metsi a mangata 'me u batle thuso ea bongaka.


  • E fetileng:
  • E 'ngoe:

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