Wet Chemistry Analysis

wet chemistry analysis

Polyhedron Laboratories performs wet chemistry analysis according to ASTM standards, such as Acrylic Acid (ASTM D 4094), % Ash (ASTM D 297), % Carbon Black (ASTM D 297, Part 38 and ASTM D 1603) and Isocyanate Amine Equivalence (ASTM D 5155). Polyhedron also offers additional wet chemistry testing including Double Bonds by m-chloroperoxybenzoic Acid Oxidation and High Pressure Polymer Hydrolysis and Titration for Percentage Acid.

All ASTM standard descriptions below are paraphrased from the ASTM website (www.astm.org). Due to copyright restrictions, Polyhedron Laboratories cannot make available copies of standards. Standards can be found and are available at www.astm.org.

ASTM D 4094-00

Standard Wet Chemistry Testing Method for Acid Content of Ethylene-Acrylic Acid Copolymers
This test procedure deals with the determination of the acid content of ethylene-acrylic acid (EAA) copolymers with 2.5 to 25% weight of acrylic acid.

ASTM D 297-93e2

Standard Wet Chemistry Testing Methods for Rubber Products-Chemical Analysis
These test procedures deal with the quantitative and qualitative analysis (including ash analysis and fillers analysis, including % Carbon Black) of the composition of rubber products. Many of these test routines can be used for the analysis of synthetic and natural crude rubbers.

ASTM D 1603-06

Standard Wet Chemistry Testing Method for Carbon Black Content in Olefin Plastics
This test procedure deals with the determination of the carbon black content in polypropylene, polyethylene, and polybutylene plastics. Determinations of carbon black content are completed gravimetrically after pyrolysis of the specimen under nitrogen.

ASTM D 5155-01

Standard Wet Chemistry Testing Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates
These test procedures determine the isocyanate content of aromatic isocyanates used as polyurethane raw materials.
  • Test Procedure A - Unheated toluene-dibutylamine establishes the amount of toluene diisocyanate in refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. If other isomers are present, they will be included in the determination. This test routine can also be applied to other isocyanates of suitable solubility and reactivity.
  • Test Procedure B - Heated toluene-dibutylamine establishes the amine equivalent of modified or crude isocyanates derived from methylenebis-(4-phenylisocyanate), toluene diisocyanate and polymethylene polyphenylisocyanate.
  • Test Method C - Unheated trichlorobenzene-toluene-dibutylamine establishes the isocyanate content of modified or crude isocyanates derived from methylenebis(4-phenylisocyanate), toluene diisocyanate, and polymethylene polyphenylisocyanate. This test procedure can also be used to evaluate isomer mixtures of methylenebis(phenylisocyanate) and toluene diisocyanate.
Acrylic Acid ASTM D 4094
% Ash ASTM D 297
% Carbon Black ASTM D 297 (Part 38)
% Carbon Black ASTM D 1603
Double Bonds by m-chloroperoxybenzoic Acid Oxidation  
High Pressure Polymer Hydrolysis and Titration for % Acid  
Isocyanate Amine Equivalence ASTM D 5155

Contact Polyhedron Laboratories about Wet Chemistry Testing.

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