{"id":63896,"date":"2024-10-17T12:20:58","date_gmt":"2024-10-17T12:20:58","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d4875-2011\/"},"modified":"2024-10-24T18:12:41","modified_gmt":"2024-10-24T18:12:41","slug":"astm-d4875-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d4875-2011\/","title":{"rendered":"ASTM-D4875 2011"},"content":{"rendered":"<\/p>\n

1.1 Test Method A<\/span><\/span> Proton Nuclear Magnetic Resonance Spectroscopy ( 1<\/sup> H NMR) measures polymerized ethylene oxide (EO) in ethylene oxide-propylene oxide polyethers used in flexible urethane foams and nonfoams. It is suitable for diols made from the commonly used initiators and containing EO percentages above five. For triols initiated with glycerin and trimethylol propane, an uncorrected EO value is obtained since both initiators have protons that contribute to the EO measurement.<\/p>\n

1.2 Test Method B<\/span><\/span> Carbon-13 Nuclear Magnetic Resonance Spectroscopy ( 13<\/sup> C NMR) measures the polymerized EO content of ethylene oxide-propylene oxide polyethers used in flexible urethane foams and nonfoams. It is suitable for diols and triols made from the commonly used initiators and containing EO percentages above five.<\/p>\n

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.<\/p>\n

1.4 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.<\/span><\/p>\n

Note<\/span> 1There is no known ISO equivalent to this standard.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Summary of Test Methods <\/td>\n<\/tr>\n
2<\/td>\nSignificance and Use
Equipment
Reagents and Materials
Standard
Preparation of Sample
Instrument Preparation
NMR Analysis
Calculation
Report
Precision and Bias <\/td>\n<\/tr>\n
3<\/td>\nFIG. 1
FIG. 2
TABLE 1
TABLE 2 <\/td>\n<\/tr>\n
4<\/td>\nEquipment
Reagents
Standards
Preparation of Sample
Instrument Preparation
NMR Analysis
Calculation
Report
Precision and Bias <\/td>\n<\/tr>\n
5<\/td>\nFIG. 3
FIG. 4
TABLE 3 <\/td>\n<\/tr>\n
6<\/td>\nKeywords
TABLE 4 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D4875-11 Standard Test Methods of Polyurethane Raw Materials: Determination of the Polymerized Ethylene Oxide Content of Polyether Polyols<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2011<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":63897,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1179,2637],"product_tag":[],"class_list":{"0":"post-63896","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-20","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/63896","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\/63897"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=63896"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=63896"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=63896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}