Terephthalic acid is the organic compound with formula C6H4(COOH)2. This colourless solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. Several million tones are produced annually. It is one of three isomeric phthalic acids.
Tili ndi mafakitale apamwamba kwambiri omwe ali ndi mgwirizano wozama, omwe angakupatseni mankhwala apamwamba kwambiri komanso mitengo yampikisano. Ndipo titha kuperekanso kuchotsera pogula zinthu zambiri.Ndipo timagwirizana ndi makampani ambiri otumiza katundu, amatha kubweretsa zinthu mosatekeseka m'manja mwanu. Kutumiza nthawi ndi za 3-20 masiku chitsimikiziro cha malipiro.
Kanthu | Top grades | First grade | |
Maonekedwe | White powder | White powder | |
Acid value /(mgKOH/g) | 675±2 | 675±2 | |
P-Carboxybenzaldehyde/(mg/Kg) | ≤25 | ≤25 | |
p-methylbenzaldehyde /(mg/Kg) | ≤150 | ≤180 | |
Ignition residue/(mg/Kg) | ≤6 | ≤10 | |
Total heavy metal (Mo,Cr, Ni, Co, Mn,Fe )/(mg/Kg) | ≤3 | ≤5 | |
Fe/(mg/Kg) | ≤1 | ≤2 | |
moisture W/% | ≤0.2 | ≤0.2 | |
DMF tinct(5g/100ml)/Hazen unit | ≤10 | ≤10 | |
(Platinum cobalt color number) | |||
b*value | ≤1.4 | ≤1.5 | |
Particle size distribution | 250μm W/% | 7.9 | 7.9 |
45μm W/% | 10.2 | 10.2 | |
average grain diameter/μm(sieve method) | 128 | 128 |
Terephthalic acid is an organic compound with formula C6H4(CO2H)2. This white solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. Several million tons are produced annually.Terephthalic acid is poorly soluble in water and alcohols.
The application of terephthalic acid is relatively concentrated, with over 90% of the world's terephthalic acid used to produce polyethylene terephthalate. Another important application of terephthalic acid is the production of plasticizers.
This includes two types: the first type is dioctyl terephthalate (DOTP), which is the product of esterification reaction between terephthalic acid and industrial octanol (2-ethylhexanol). It is a high-quality plasticizer with high flash point and high specific resistivity, especially suitable for the production of cable materials with high heat resistance and insulation requirements;
1. Kodi ndinu fakitale kapena kampani yamalonda?
Ndife compnay kuphatikiza makampani ndi malonda, kupereka amodzi-stop service.OEM akhoza kulandiridwa.
2. Kodi mumapereka zitsanzo? Ndi zaulere kapena zowonjezera?
Zitsanzo zaulere. Ndalama zonyamula katundu zachitsanzo ziyenera kulipidwa ndi mbali yanu.
3. Kodi muli ndi ziphaso zilizonse zokhudzana ndi kuwongolera bwino?
ISO 9001:2008 certification kuti mutsimikizire mtundu.
4. Kodi ndiyenera kupereka chiyani kuti ndilandireko mawu?
Pls amatiuza za mtundu wazinthu zomwe mukufuna, kuchuluka kwa madongosolo, ma adilesi ndi zofunikira zenizeni.
5. Mumakonda njira yolipira yanji? Ndi mawu otani omwe amavomerezedwa?
Malamulo Ovomerezeka Ovomerezeka: FOB,CFR,CIF,EXW;
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Mtundu wa Malipiro Ovomerezeka: T/T,Western Union; Paypal, Trade Assurance.
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