融(rong)(rong)雪(xue)劑(ji)的(de)融(rong)(rong)雪(xue)原理(li)是:“氯(lv)鹽(yan)(yan)類”融(rong)(rong)雪(xue)劑(ji)溶(rong)(rong)于(yu)水(shui)(雪(xue))后(hou)(hou)(hou)(hou),其(qi)冰(bing)點(dian)(dian)在零度(du)(du)下,如,氯(lv)化鈉(na)(食鹽(yan)(yan)主要成分)溶(rong)(rong)于(yu)水(shui)后(hou)(hou)(hou)(hou)冰(bing)點(dian)(dian)在-10℃,氯(lv)化鈣在-20℃左右,醋酸類可達(da)-30℃左右。鹽(yan)(yan)水(shui)的(de)凝(ning)固(gu)(gu)點(dian)(dian)比水(shui)的(de)凝(ning)固(gu)(gu)點(dian)(dian)低(di),因而在雪(xue)水(shui)中(zhong)溶(rong)(rong)解了鹽(yan)(yan)之后(hou)(hou)(hou)(hou)就難以再形成冰(bing)塊。此外,融(rong)(rong)雪(xue)劑(ji)溶(rong)(rong)于(yu)水(shui)后(hou)(hou)(hou)(hou),水(shui)中(zhong)離(li)子(zi)濃度(du)(du)上升,使(shi)水(shui)的(de)液相蒸氣壓(ya)下降(jiang),但冰(bing)的(de)固(gu)(gu)態(tai)蒸氣壓(ya)不變。