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ASTM D7476-2008 盐保存(腌制)兽皮卤水饱和度的试验方法

ASTM D7476-2008 盐保存(腌制)兽皮卤水饱和度的试验方法

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资料描述

【英文标准名称】: Standard Test Method for Brine Saturation Value of Cured (Salt-Preserved) Hides and Skins
【原文标准名称】: 盐保存(腌制)兽皮卤水饱和度的试验方法
【标准号】: ASTM D7476-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: D31.02
【标准类型】: (Test Method)
【标准水平】: ()
【中文主题词】:
【英文主题词】: ash; brine saturation; curing; hide ; moisture; skin
【摘要】: This test method is intended to evaluate whether sufficient salt (NaCl) has been retained by the hides or skins to slow down degradation by bacterial (enzymatic) action, and to slow down autolysis by inherent enzymatic action, until they are preserved by a tanning process. Note 28212;Osmosis occurs during brine curing because moisture is drawn out by salt through the epidermis. Low moisture (x003C; 40 %) in the hides does not necessarily indicate poor cure. A hide may have low moisture due to osmosis; to increased fat content; or to drying out conditions. In all instances the hides would still show adequate cure if the moisture was saturated to approximately 85 % salt, because the ash: moisture ratio would be adequate.1.1 This test method covers the estimation of degree of saturation of the brine content of cured (salt-preserved) hides and skins containing 40 % or more moisture. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
【中国标准分类号】: Y45
【国际标准分类号】: 59_140_20
【页数】: 3P.;A4
【正文语种】: 英语

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