ASTM D5629 - 16 - Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers

ASTM D5629 - 16

Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers

Status : Current   Published : April 2016

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1.1 This test method measures the acidity, expressed as ppm of hydrochloric acid (HCl), in aromatic isocyanate or polyurethane prepolymer samples of below 100 ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene di(phenylisocyanate) (see Note 1). Refer to Test Method D6099 for determination of acidity in moderate- to high-acidity aromatic isocyanates.

1.2 The values stated in SI units are to be regarded as the standard.

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.

Note 1:  This standard is equivalent to ISO 14898, Method B.




Standard NumberASTM D5629 - 16
TitleStandard Test Method for Polyurethane Raw Materials: Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers
StatusCurrent
Publication Date01 April 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Acidity, Aromatic isocyanates, Isocyanates, Methylene-bis-(4-phenylisocyanate), Methylene di(phenylisocyanate), Methylene diphenyldiisocyanate, MDI, Prepolymer, Polyurethane, Raw materials, Test method, TDI, Titration, Toluene diisocyanate
ICS83.080.10
PublisherASTM
FormatA4
DeliveryYes
Pages3
File Size72 KB
Price£36.00


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