Logo

ASTM D4889-04(2011)

Historical Reaffirmation

Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Crude or Modified Isocyanates

$73.00

$73.00

$131.40


Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


Stay effortlessly up-to-date with the latest standard revisions. When new versions are released, they're automatically charged and delivered to you, ensuring seamless compliance.

...

1.1 These test methods (A and B) determine the viscosity of crude or modified isocyanates. They are applicable to products derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate), and polymethylene polyphenylisocyanates (see Note 1).

Note 1—Test method A includes a procedure for measuring dynamic viscosity using a rotational Brookfield instrument. Test method B is simply a reference to a general procedure for measuring kinematic viscosity using a Cannon-Fenske instrument, D445.

1.2 The values stated in SI units are to be regarded as 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. For specific hazards statements see Warnings at the end of 5.1 and 10.5.

Note 2—There is no known ISO equivalent to this standard.


These test methods can be used for research or for quality control to characterize isocyanates used in polyurethane products.

Viscosity measures the resistance of a fluid to uniform continuous flow without turbulence or other forces.

Some isocyanates exhibit non-Newtonian behavior under certain conditions. Whenever possible, generate results for comparison under the same conditions, that is, the same spindle/speed combination for Brookfield viscosity and the same tube size for Cannon-Fenske viscosity.

SDO ASTM: ASTM International
Document Number D4889
Publication Date Feb. 1, 2011
Language en - English
Page Count 3
Revision Level 04(2011)
Supercedes
Committee D20.22
Publish Date Document Id Type View
Jan. 15, 2021 D4889-21 Revision
May 1, 2015 D4889-15 Revision
April 1, 2004 D4889-04 Revision
July 10, 1998 D4889-98 Revision
Feb. 1, 2011 D4889-04R11 Reaffirmation