1、 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar, Inc. AUGUST 2009 Page 1 of 1 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECIFIC
2、ATION) NUMBER: CEMS BT-44 TITLE: Phosphorus In Oil CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve haza
3、rdous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change Notice:
4、 Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This method covers a procedure for determining the percent phosphorus in oils. 2.0 APPARATUS 2.1 Apparatus per ASTM D 1091 and ASTM E 30. 2.2 250 ml beaker. 2.3 300 ml Erlenmeyer flask. 3.
5、0 MATERIAL 3.1 Materials per ASTM D 1091 and ASTM E 30. 3.2 Ammonium Hydroxide, concentrated (NH4OH). 3.3 Nitric Acid, concentrated (HNO3). 3.4 Potassium Permanganate, saturated solution (KMnO4). 3.5 Tartaric Acid solution - 200 grams per liter. 3.6 Ammonium Molybdate solution (acidic) - Reagent #10
6、2 per ASTM E 50. 3.7 Distilled water. 4.0 PROCEDURE 4.1 Accurately weigh a 2 gram sample of oil into a 250 ml beaker and oxidize per ASTM D 1091. 4.2 After the oxidation is completed, cool sample and dilute with H2O to 50 ml. Transfer solution to 300 ml Erlenmeyer flask, washing beaker well with hot
7、 H2O, and dilute to 150 ml. (If lead or barium is present, as indicated by a precipitate, filter the sample into a 300 ml flask and wash well with water.) 4.3 Make the sample alkaline, as indicated by phenolphthalein, with concentrated NH4OH: bring it back to acidity with concentrated HNO3 then add
8、3 ml excess HNO3. 4.4 Oxidize the sample with 7 to 10 ml saturated KMnO4 solution and boil gently for 20 to 30 minutes. 4.5 Dropwise, add sufficient tartaric acid solution to dissolve the precipitate; then boil a few minutes to expel the oxides of nitrogen (until solution is clear). 4.6 Cool sample slightly and add 50 ml of ammonium molybdate solution, shake and allow precipitate to settle for 2 hours. 4.7 Filter through a close texture paper and complete the determination of phosphorus by the alkalimetric method per ASTM E 30. 5.0 REPORT Report percent phosphorus in sample.
