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Suav lub npe : dichloromethane |
Number of yus cov khoom: 61552 |
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English npe: dichloromethane |
UN tooj: 1593 |
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Molecular mis: CH2Cl2 |
Molecular yuag: 84,94 |
CAS tooj: 75-09-2 |
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Lub cev thiab tshuaj zog |
Tsos thiab sijhawm |
Ib tug tsis muaj kob, pob tshab kua nrog ib tug uas muaj ntxhiab tsw. |
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Melting point (° C) |
-96,7 |
Tus kwv tij ceev (dej = 1) |
1.33 |
Tus kwv tij ceev (huab cua = 1) |
2,93 |
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Boiling point (° C) |
39,8 |
Noo vapor siab (kPa) |
30.55 / 10 ℃ |
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solubility |
Me ntsis soluble nyob rau hauv dej, soluble nyob rau hauv ethanol thiab ether. |
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Toxicity thiab muaj teeb meem |
Raug txwv
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Lub sij hawm-weighted pub concentration (mg / m3) |
200 |
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Luv-lub sij hawm raug pub concentration (mg / m3) |
300 |
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Maximum pub concentration (mg / m3) |
/ |
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Lawv ntawm ntxeem tau |
Nqus tau pa, haus, percutaneous haum. |
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toxicity |
LD50: 1600 ~ 2000mg / kg (tsuag qhov ncauj) LC50: 88000mg / m3,1 / 2 小时 (tsuag nqus tau pa) |
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Health teeb meem |
Dichloromethane yog ib qho kev ua kom loog uas ua rau ua pa thiab lub plawv central tuag tes tuag taw thiab yuav ua rau koj muaj teebmeem kev edema. Mob lom: cov neeg mob tej zaum yuav muaj kiv taub hau, mob taub hau, ntuav thiab txheej membrane voos nyob rau hauv lub ob lub qhov muag thiab Upper pa ib ntsuj av. Nyob rau hauv loj heev zaum, ntsws thiab pulmonary edema zaum yuav tshwm sim, thiab tshuaj loog tsos mob xws li coma zaum yuav tshwm sim. Mob los: Long-term raug mas muaj xws li mob taub hau, qaug zog, kiv taub hau, tsis qab los noj mov, qeeb zog, thiab tsaug zog. Tej zaum ua rau daim tawv nqaij puas tsuaj, tawv nqaij defatting, dryness, scaling thiab chapping. |
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Hlawv tawg teeb meem |
Flammability |
combustible |
Combustion decomposition khoom |
Carbon monoxide, carbon dioxide, hydrogen chloride, phosgene. |
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Flash point (° C) |
/ |
Upper tawg txwv (v%) |
19 |
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Ignition kub (° C) |
615 |
Lower tawg txwv (v%) |
12 |
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Nyaum yam ntxwv |
Nyob rau hauv cov ntaub ntawv ntawm hluav taws, kub siab yog flammable. Decomposition los ntawm tshav kub muaj peev xwm tso mas lom phosgene. Nyob rau hauv cov ntaub ntawv ntawm kub siab, lub sab hauv siab ntawm lub thawv nce, npe nrov ib tug uas yuav ntawm cracking thiab tawg. |
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Siv cov kev faib hluav taws yuav raug kev faib |
c |
stability |
stability |
polymerization teeb meem |
yuav tuaj tsis tau |
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incompatibility |
Alkali hlau, txhuas. |
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Hluav Taws sib ntaus sib tua txoj kev |
Tua hluav taws muaj dej, ua npuas ncauj, carbon dioxide, thiab xuab zeb. |
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thawj-aid |
Daim tawv nqaij hu rau: Tshem tawm tej khaub ncaws thiab yaug kom huv si uas siv xub npum thiab dej. Qhov muag hu rau: Tam sim ntawd tsa muag daj thiab yaug nrog kom ntau khiav dej los yog saline. Nqus tau pa: Tshem tawm sai sai los ntawm cov scene kom huab cua ntshiab. Muab cov pa thaum ua tsis taus pa yog nyuaj. Thaum ua pa lawm, pib CPR tam sim ntawd. Nrhiav kev kho mob. Haus: haus ntawm ib tug loj npaum li cas ntawm dej sov, ntxias ntuav, nrhiav kev kho mob. |
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to pov tseg |
Khiav tawm hauv lub neeg nyob rau hauv lub chaw raug dej nyab mus rau ib tug muaj kev ruaj ntseg cheeb tsam, txwv tsis pub ncaj neeg los ntawm kev mus rau lub chaw raug dej nyab thiab txiav tawm qhov hluav taws kub chaw. Nws yog pom zoo kom hais tias thaum muaj xwm ceev cov neeg ua hnav nws tus kheej-muaj ua pa apparatus thiab hnav general hluav taws kev tiv thaiv cov khaub ncaws. Nres txia thaum kom muaj kev ruaj ntseg. Nws yog tov nrog rau cov xuab zeb los yog lwm yam uas tsis yog-combustible adsorbent thiab ces sau thiab thauj mus rau ib tug pov tseg pov tseg site rau pov tseg. Yog hais tias muaj yog ib tug loj npaum li cas ntawm to, siv cov dike yuav tsum tau muaj, thiab ces collect, hloov, recycle los yog pov tseg tom qab pov tseg. |
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Cia thiab tsheb thauj mus los xav txog kev teem |
1 Cia Ceev faj: khw nyob rau hauv ib tug txias, ventilated warehouse. Khaws tseg los ntawm cov hluav taws thiab tshav kub. Tiv thaiv hnub raug. Khaws lub thawv kaw. Nws yuav tsum tau muab cia rau nyias los ntawm oxidants thiab acids. Yuav tsis muaj mixed thiab mixed. Maj mam thauj khoom thiab unload thaum lub sij hawm tuav los tiv thaiv kev puas tsuaj rau lub ntim thiab ntim. Ua tib zoo saib koj tus kheej tiv thaiv rau dispensing thiab kov ua hauj lwm. 2 Tsheb thauj mus los ceev faj: Ua ntej lub kis tau tus mob, xyuas seb lub ntim thawv yog kom tiav thiab kaw. Thaum lub sij hawm thauj mus los, xyuas kom meej tias lub thawv tsis paim quav, cev qhuav dej, nplooj ntoos zeeg los kev puas tsuaj. Nws yog nruj me ntsis txwv tsis pub sib tov nrog acids, oxidants, cov zaub mov thiab khoom noj khoom haus additives. Tsheb thauj mus los yog nqa tawm raws li cov kws lawv. |