融(rong)雪劑(ji)的融(rong)雪原理是(shi):“氯鹽(yan)類”融(rong)雪劑(ji)溶于水(shui)(雪)后(hou),其冰(bing)點(dian)在(zai)(zai)零(ling)度(du)下(xia),如,氯化鈉(食鹽(yan)主要成(cheng)分)溶于水(shui)后(hou)冰(bing)點(dian)在(zai)(zai)-10℃,氯化鈣在(zai)(zai)-20℃左(zuo)右,醋酸(suan)類可達-30℃左(zuo)右。鹽(yan)水(shui)的凝固點(dian)比水(shui)的凝固點(dian)低(di),因而在(zai)(zai)雪水(shui)中溶解了鹽(yan)之后(hou)就難以再(zai)形成(cheng)冰(bing)塊(kuai)。此外,融(rong)雪劑(ji)溶于水(shui)后(hou),水(shui)中離(li)子濃度(du)上(shang)升,使水(shui)的液相蒸(zheng)氣(qi)壓下(xia)降,但冰(bing)的固態蒸(zheng)氣(qi)壓不變。