標準編號:	GB/T 2539-2008
中文名稱:	石油蠟熔點的測定 冷卻曲線法
英文名稱:	Petroleum waxes - Determination of melting point-cooling curve method
中標分類:	E42    石油蠟
行業分類:	GB    國家標準
ICS分類:	75.140 75.140    石蠟、瀝青材料和其他石油產品: 75.140
發布機構:	中華人民共和國國家質量監督檢驗檢疫總局 中國家標準化管理委員會
發布日期:	2008-5-12
實施日期:	2008-9-1
標準狀態:	superseded
被新標準替代:	GB/T 2539-2023 石油蠟熔點的測定 冷卻曲線法
被替代日期:	2024-4-1
作廢日期:	2024-04-01
替代舊標準:	GB/T 2539-1981 石蠟溶點(冷卻曲線)測定法
翻譯語言:	英文
文件格式:	PDF
中文字符數:	4000 字
翻譯價格(元):	280.0
交付時間:	付款后 1 個工作日

1 Scope 1.1 This Standard specifies a method for the determination of the melting Point (cooling curve) of Petroleum wax. This Standard is applicable to Petroleum wax. It is unsuitable for waxes of the petrolatum group, the microcrystalline waxes, or blends of such waxes with Paraffin wax or scale wax. 1.2 Melting Point (cooling curve) is a test that is widely used by wax suppliers and consumers. It is particularly applicable to petroleum waxes that are rather highly paraffinic or crystalline in nature. A Plateau occurs with specimens containing appreciable amounts of hydrocarbons that crystallize at the same temperature, giving up heat of fusion, thus temporarily retarding the cooling rate. In general, Petroleum waxes with large amounts of non-normal hydrocarbons or with amorphous solid forms will not show the Plateau.