Lwm qhov tshwj xeeb ntawm kev ntim khoom tuaj yeem muab tau raws li cov neeg siv khoom xav tau
Helium 99.999% purity Nws Electronic Gas
Helium 99.999% purity Nws Electronic Gas
Parameter
| Khoom | Tus nqi |
|---|---|
| Cov tsos thiab cov khoom | Tsis muaj xim, tsis muaj ntxhiab, thiab inert roj ntawm chav tsev kub |
| Tus nqi PH | Tsis muaj qab hau |
| Melting point (℃) | -272.1 |
| Kub taw tes (℃) | -268.9 |
| Relative density (dej = 1) | Tsis muaj ntaub ntawv |
| Relative vapor density (air = 1) | 0.15 |
| Saturated vapor siab (KPa) | Tsis muaj ntaub ntawv |
| Octanol / dej faib coefficient | Tsis muaj ntaub ntawv |
| Flash point (°C) | Tsis muaj qab hau |
| Ignition kub (°C) | Tsis muaj qab hau |
| Kev kub ceev combustion (°C) | Tsis muaj qab hau |
| Upper tawg txwv % (V / V) | Tsis muaj qab hau |
| Tsawg tawg txwv % (V / V) | Tsis muaj qab hau |
| Decomposition kub (°C) | Tsis muaj qab hau |
| Flammability | Tsis-combustible |
| Solubility | Me ntsis soluble hauv dej |
Cov lus qhia kev nyab xeeb
Thaum muaj xwm txheej ceev: Tsis muaj roj, lub tog raj kheej lub thawv yog yooj yim rau overpressure nyob rau hauv tshav kub, muaj kev pheej hmoo ntawm tawg.
GHS Hazard Qeb: Raws li Kev Tshawb Fawb Tshuaj, Daim Ntawv Ceeb Toom thiab Kev Ceeb Toom Specification series, cov khoom no yog cov roj hauv siab - compressed gas.
Lus ceeb toom: ceeb toom
Cov ntaub ntawv txaus ntshai: Gas nyob rau hauv siab, yog tias cua sov tuaj yeem tawg.
Cov kev ceev faj:
Kev ceev faj: Khaws kom deb ntawm qhov chaw kub, qhib nplaim taws, thiab qhov chaw kub. Tsis haus luam yeeb hauv chaw ua haujlwm.
Cov lus teb raug xwm txheej: txiav tawm qhov xau, tsim nyog qhov cua, ua kom nrawm nrawm.
Kev ruaj ntseg cia: Tsis txhob tshav ntuj, khaws cia rau hauv qhov chaw muaj cua zoo Kev pov tseg: Cov khoom no lossis nws lub thawv yuav tsum muab pov tseg raws li cov cai hauv zos
Kev phom sij ntawm lub cev thiab tshuaj lom neeg: compressed tsis-flammable gas, lub tog raj kheej ntim yog yooj yim rau overpressure thaum rhuab, thiab muaj kev pheej hmoo ntawm tawg. High concentration inhalation yuav ua rau suffocation. Kev raug rau cov kua helium tuaj yeem ua rau frostbite.
Kev phom sij rau kev noj qab haus huv: Cov khoom no yog cov pa roj inert, siab concentrations tuaj yeem txo qhov siab ib nrab thiab muaj kev phom sij. Thaum cov concentration ntawm helium nyob rau hauv cov huab cua nce, tus neeg mob ua ntej ua pa sai, inattention, thiab ataxia, ua raws li qaug zog, chim siab, xeev siab, ntuav, coma, convulsions, thiab tuag.
Environmental harms: Tsis muaj kev puas tsuaj rau ib puag ncig.
Daim ntawv thov
