{"id":23280,"date":"2024-10-16T23:53:29","date_gmt":"2024-10-16T23:53:29","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d938-2005-2\/"},"modified":"2024-10-24T13:22:18","modified_gmt":"2024-10-24T13:22:18","slug":"astm-d938-2005-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d938-2005-2\/","title":{"rendered":"ASTM-D938 2005"},"content":{"rendered":"
\n Significance and Use <\/b><\/p>\n

Congealing point is a wax property that is of interest to many petroleum wax consumers. The procedure described here measures the temperature at which a sample being cooled develops a \u201c <\/span> set \u201d <\/span> or resistance to flow. At that temperature, the wax may be at or close to the solid state, or it may be semisolid and quite unctuous, depending on the composition of the wax or petrolatum being tested. In the case of petrolatums, congealing property is associated with the formation of a gel structure as the sample cools.<\/p>\n

1. Scope <\/b><\/p>\n

1.1 This test method covers determination of the congealing point of petroleum waxes, including petrolatum.<\/p>\n

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.<\/p>\n

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. <\/i><\/p>\n

Note 1\u2014This test method is an alternative to Test Method D 127. Results obtained are usually lower than the results obtained by Test Method D 127 – IP 133, the amount of the deviation varying with the nature of the petroleum wax.<\/p>\n

2. Referenced Documents <\/b> (purchase separately) <\/i> The documents listed below are referenced within the subject standard but are not provided as part of the standard.<\/span><\/p>\n

ASTM Standards <\/b><\/p>\n

D127<\/span> Test Method for Drop Melting Point of Petroleum Wax, Including Petrolatum E1<\/span> Specification for ASTM Liquid-in-Glass Thermometers <\/p>\n

Keywords <\/b><\/p>\n

congealing point; petrolatum; petroleum waxes;<\/p>\n

ICS Code <\/b><\/p>\n

ICS Number Code 75.140 (Waxes, bituminous materials and other petroleum products)<\/p>\n

DOI: <\/b> 10.1520\/D0938-05 ASTM International is a member of CrossRef. <\/p>\n

\n

<\/h2>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

D938-05 Standard Test Method for Congealing Point of Petroleum Waxes, Including Petrolatum (Redline)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2005<\/td>\n3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":23281,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-23280","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astm","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/23280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/23281"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=23280"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=23280"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=23280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}