{"id":62326,"date":"2024-10-17T11:55:17","date_gmt":"2024-10-17T11:55:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d4274-2011\/"},"modified":"2024-10-24T18:03:19","modified_gmt":"2024-10-24T18:03:19","slug":"astm-d4274-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d4274-2011\/","title":{"rendered":"ASTM-D4274 2011"},"content":{"rendered":"

ASTM D4274-11<\/h3>\n

Historical Standard: Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols<\/h4>\n
\n

ASTM D4274<\/h4>\n

Scope<\/strong><\/p>\n

1.1 These test methods measure the hydroxyl groups in polyester and polyether polyols containing primary and secondary hydroxyl groups. They also apply to many other hydroxyl-containing substances.<\/p>\n

1.1.1 Test Method AAcetic Anhydride Pressure Bottle<\/span>,<\/span> recommended for polyesters.<\/p>\n

1.1.2 Test Method BPhthalic Anhydride Pressure Bottle<\/span>,<\/span> recommended for polyethers and polyesters.<\/p>\n

1.1.3 Test Method CPhthalic Anhydride Reflux<\/span>,<\/span> recommended for polyethers and polyesters.<\/p>\n

1.1.4 Test Method DImidazole\u2013<\/span>Catalyzed Phthalic Anhydride Pressure Bottle<\/span>,<\/span> recommended for polyethers, polyesters, polymer polyols, and amine-initiated polyols.<\/p>\n

1.1.5 Test Method E<\/span>\u2014<\/span>Imidazole-Catalyzed Pyromellitic Dianhydride Esterification<\/span>, recommended for polyols used for flexible and rigid polyurethane foams and urethane elastomers. It is recommended for polyester polyols, polyether polyols, amine-started polyols, and polymer polyols (polyacrylonitrile\/copolystyrene-based).<\/p>\n

1.2 Another ASTM test method for measuring hydroxyl groups is Test Method E222.<\/p>\n

1.3 The values stated in SI units are to be regarded as the 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> 1\u2014This standard and ISO 6796 address the same subject matter, but differ in technical content.<\/p>\n

Keywords<\/strong><\/p>\n

acetic anhydride; esterification; hydroxyl number; phthalic anhydride; polyester; polyether; polyol; pyromellitic dianhydride; titration; Hydroxyl numbers; Polyether polyols; Polyols; Polyurethane insulation; Polyurethane raw materials–polyols<\/p>\n

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

ICS Number Code 83.080.20 (Thermoplastic materials)<\/p>\n

DOI:<\/strong> 10.1520\/D4274-11<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\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
Reagents
Sampling
Interferences
Apparatus
Reagents <\/td>\n<\/tr>\n
3<\/td>\nProcedure
Calculation
Report
Precision and Bias <\/td>\n<\/tr>\n
4<\/td>\nInterferences
Apparatus
Reagents
Procedure <\/td>\n<\/tr>\n
5<\/td>\nCalculation
Report
Precision and Bias
Interferences
Apparatus
Reagents
Procedure
Calculation
Report
Precision and Bias
Interferences
Apparatus <\/td>\n<\/tr>\n
6<\/td>\nReagents
Procedure
Calculation <\/td>\n<\/tr>\n
7<\/td>\nReport
Precision and Bias
Interferences
Apparatus
Reagents
TABLE 1 <\/td>\n<\/tr>\n
8<\/td>\nProcedure
Calculation
Report
Precision and Bias <\/td>\n<\/tr>\n
9<\/td>\nKeywords
TABLE 2 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D4274-11 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of 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>\n9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":62327,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1179,2637],"product_tag":[],"class_list":{"0":"post-62326","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\/62326","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\/62327"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=62326"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=62326"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=62326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}