Tom ntej: Hydroquinone CAS 123-31-9
Melting point 172-175 ° C (lit.)
Kub taw tes 285 ° C (lit.)
ceev 1.32
vapor ceev 3.81 (vs huab cua)
vapor siab 1 mm Hg (132 ° C)
Refractive Index 1.6320
Fp 165 ° C
cia temp. Khaws hauv qab +30 ° C.
solubility H2O: 50 mg/mL, ntshiab
daim ntawv koob zoo li Crystals lossis Crystalline hmoov
pka 10.35 (ntawm 20 ℃)
xim dawb mus rau dawb
Dej Solubility 70 g / L (20 ºC)
Huab cua & Lub teeb Sensitive
Merck 14, 4808
TIAB SA 605970
| Khoom npe | Hydroquinone | Batch No. | JL20211025 |
| Cas | 123-31-9 : kuv | MF Hnub tim | Peb Hlis 25, 2021 |
| Ntim | 25KGS / hnab | Hnub Soj Ntsuam | Peb Hlis 25, 2021 |
| Ntau | 5 MT ib | Hnub Kawg | 24 Peb., 2023 |
| Yam khoom | Txuj | Kev tshwm sim | |
| Qhov tshwm sim | Dawb crystalline hmoov | Ua raws | |
| Kev ntsuas % | 99-101 : kuv | 99.9 ua | |
| Melting point | 171-175 : kuv | 171.9-172.8 ib | |
| Residue tom qab ignition% | ≤ 0.05 | 0.02 ib | |
| Fe% | ≤ 0.002 | ＜0.002 ib | |
| Pb % | ≤ 0.002 | ＜0.002 ib | |
| Xaus | Ua raws | ||
Hydroquinone yog ib tug pigment-lightening neeg sawv cev siv nyob rau hauv bleaching cream. Hydroquinone ua ke nrog oxygen sai heev thiab ua xim av thaum raug huab cua. Txawm hais tias nws tshwm sim ib txwm muaj, cov khoom siv hluavtaws yog ib qho uas nquag siv hauv tshuaj pleev ib ce. Daim ntawv thov rau ntawm daim tawv nqaij yuav ua rau muaj kev tsis haum tshuaj thiab ua rau daim tawv nqaij rhiab heev. Hydroquinone yog qhov muaj peev xwm ua rau mob qog noj ntshav thiab cuam tshuam nrog ua rau ochronosis, ua rau tawv nqaij tawg. US FDA tau txwv tsis pub hydroquinone los ntawm oTC cov tshuaj pleev ib ce, tab sis tso cai 4 feem pua ntawm cov khoom siv tshuaj.
1,4-dihydroxybenzene, tseem hu ua hydroquinone, yog ib qho tseem ceeb tshuaj raw khoom. Nws cov tsos yog dawb acicular siv lead ua. 1,4-dihydroxybenzene yog dav siv los ua ib qho tseem ceeb raw khoom, nruab nrab thiab pab neeg sawv cev rau tshuaj, tshuaj tua kab, dyes thiab roj hmab. Nws yog tsuas yog siv los ua tus tsim tawm, anthraquinone dye, azo dye, roj hmab antioxidant thiab monomer polymerization inhibitor, zaub mov stabilizer thiab txheej antioxidant, roj av anticoagulant, hluavtaws ammonia catalyst, thiab lwm yam. thiab kub.
25kg / nruas.
