Dichloromethane |75-09-2
Product Physical Data:
| Khoom npe | Dichloromethane |
| Cov khoom | Colorless pob tshab kua nrog cov ntxhiab tsw |
| Melting Point (°C) | -95 |
| Boiling Point (°C) | 39.8 ib |
| Relative density (Dej = 1) | 1.33 |
| Relative vapor density (air = 1) | 2.93 ib |
| Saturated vapor siab (kPa) | 46.5 (20 ° C) |
| Thaum tshav kub kub combustion (kJ / mol) | -604.9 |
| Qhov kub thiab txias (°C) | 237 |
| Critical siab (MPa) | 6.08 Nws |
| Octanol / dej faib coefficient | 1.25 |
| Flash point (°C) | -4 |
| Ignition kub (°C) | 556 ib |
| Upper tawg txwv (%) | 22 |
| Tsawg tawg txwv (%) | 14 |
| Solubility | Me ntsis soluble hauv dej, soluble hauv ethanol, ether. |
Product Properties thiab Stability:
1.Muaj me ntsis toxicity thiab ceev rov qab los ntawm kev lom, yog li nws tuaj yeem siv los ua tshuaj loog.Irritating rau daim tawv nqaij thiab mucous daim nyias nyias.Cov neeg laus nas nas qhov ncauj LD50: 1.6mL/kg.huab cua siab tshaj tso cai concentration ntawm 500 × 10-6.Kev ua haujlwm yuav tsum hnav lub npog ntsej muag roj, pom muaj tshuaj lom tam sim ntawd tshem tawm ntawm qhov chaw, kho cov tsos mob.Yam tsawg kawg nkaus hauv chloride ntawm methane.Cov vapor yog cov tshuaj loog heev thiab nqus tau los ntawm ntau qhov ntau yuav ua rau mob hnyav nrog mob qhov ntswg, mob taub hau thiab ntuav.Cov kab mob lom ua rau kiv taub hau, qaug zog, tsis qab los noj mov, impaired hematopoiesis thiab txo cov qe ntshav liab.Cov kua methylene chloride ua rau dermatitis thaum sib cuag nrog daim tawv nqaij.Inhalation ntawm 90.5g / m3 vapor hauv nas tua hauv 90 feeb.Qhov nruab nrab olfactory concentration yog 522mg / m3 thiab qhov siab tshaj plaws tso cai nyob rau hauv qhov chaw ua haujlwm yog 1740mg / m3.
2.Stability: ruaj khov
3. Cov tshuaj txwv tsis pub: Alkali hlau, txhuas
4.Txoj kev zam kom tsis txhob raug: Lub teeb, huab cua ntub
5.Polymerisation txaus ntshai: Tsis yog-polymerisation
Khoom siv:
1.Ntxiv rau cov organic synthesis, cov khoom no kuj tau siv dav hauv cov yeeb yaj kiab cellulose acetate, cellulose triacetate siv, roj av dewaxing, cov kuab tshuaj hauv kev tsim cov aerosols thiab tshuaj tua kab mob, cov vitamins, steroidal compounds, nrog rau hlau nto lacquer tu thiab degreasing thiab zaj duab xis tshem tawm.
2.Siv nyob rau hauv grain fumigation thiab tub yees ntawm low-pressure freezers thiab cua txias units.Siv los ua tus neeg pab tshuab tshuab hauv kev tsim cov polyether urethane ua npuas ncauj thiab ua tus neeg sawv cev rau extruded polysulfone ua npuas ncauj.
3.Siv raws li hnyav, extractant thiab mutagen.Siv rau hauv kev tshawb nrhiav noob caj noob ces.
4.Nws muaj cov kuab tshuaj zoo, yog cov kuab tshuaj qis qis nrog cov tshuaj lom me me thiab tsis muaj hluav taws xob ntawm cov khoom siv tshuaj hnyav, thiab muaj cov kuab tshuaj zoo rau ntau cov resins, paraffins thiab rog.Feem ntau yog siv los ua xim stripper, roj av dewaxing hnyav, extractant ntawm thermally unstable tshuaj, extractant ntawm lanolin los ntawm ntaub plaub thiab edible roj los ntawm txiv maj phaub, hnyav ntawm cellulose triacetate zaj duab xis.Kuj tseem siv dav hauv acetate fiber, vinyl chloride fiber ntau tsim, ua thiab tua hluav taws, tub yees, urotropine thiab lwm yam kev tsim khoom.
5.Siv hauv kev lag luam hluav taws xob.Feem ntau siv los ua tus neeg saib xyuas kom tshem tawm cov roj.
6.Widely siv raws li nplaim taws retardant hnyav nrog ib tug tsawg boiling point.Ntxiv nrog rau kev ntxuav cov kuab tshuaj rau cov tshuab dav hlau, cov tshuab precision, thiab lwm yam, nws kuj tuaj yeem siv los ua tus neeg sawv cev rau cov xim pleev xim, thiab tseem tuaj yeem tov nrog lwm cov kuab tshuaj los siv ntau yam kev lag luam ntxhua.
7.Tseem siv los ua ethyl ester fiber hnyav, kho hniav hauv zos anaesthetic, refrigerant thiab tua hluav taws, thiab lwm yam, yog ib qho eluent rau chromatographic sib cais thiab extraction sib cais ntawm cov kuab tshuaj.
8.Siv raws li hnyav nyob rau hauv resin thiab yas kev lag luam.
Cov ntawv khaws cia khoom:
1. Khaws rau hauv qhov chaw txias, cua txias.
2. Khaws kom deb ntawm qhov hluav taws kub thiab cua sov.
3. Khaws ntawm qhov kub tsis tshaj 32 ° C thiab qhov txheeb ze av noo tsis tshaj 80%.
4. Khaws lub thawv kaw.
5.Nws yuav tsum tau muab cais tawm ntawm cov hlau alkali thiab cov tshuaj noj tau, thiab yuav tsum tsis txhob sib xyaw.
6.Txhim kho cov khoom tsim nyog thiab cov khoom siv hluav taws xob ntau.
7.Qhov chaw cia khoom yuav tsum tau nruab nrog cov khoom siv kho mob thaum muaj xwm ceev thiab cov khoom siv vaj tse tsim nyog.
