1、 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from IPD Technical Standards Team. Suppliers are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 1 of 2 NAVISTAR, INC. Material, Parts, and Process Specificatio
2、ns (MPAPS) NUMBER: MPAPS BT-36 Former Designation: CEMS BT-36 TITLE: Grease Extraction CURRENT REV No.: 1802 DATE: Feb. 2018 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: Rev. Aug 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involv
3、e hazardous 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. 1.0 SCOP
4、E This method covers a procedure for separating the petroleum ether insoluble components from a grease. 2.0 APPARATUS 2.1 Balance with a sensitivity of 0.1 gram. 2.2 Beaker, 800 milliliters. 2.3 Beaker, 300 milliliters (tall form). 2.4 Round bottom flask, 1000 milliliters, s 24/40 2.5 Soxhlet Extrac
5、tion apparatus, large; top s 55/50, bottom s 24/40 2.6 Extraction condenser, large s 55/50 2.7 Glass-Col heater to fit 1000 milliliter round bottom flask. 2.8 Graduated cylinder, 500 milliliters. 2.9 Stirrer, magnetic. 2.10 Oven capable of maintaining 210 5F (99 3C). 3.0 MATERIAL 3.1 Petroleum ether
6、, 30-60 C, ACS. 3.2 Whatman Extraction Thimble, 43 x 123 mm. 4.0 PROCEDURE 4.1 Set up apparatus as in Figure above. Soxhlet Extraction Apparatus 4.2 Weight out 100 5 grams of sample into a tared extraction thimble. 4.3 Add 400 milliliters of petroleum ether to the flask and reflux at a rate such tha
7、t the maximum extractant level in the thimble is between the top of the grease and the top of the thimble. Stir continually. 4.4 Extract for four hours after the petroleum ether in the extraction tube appears colorless or unchanged. 4.5 Pour the contents of the flask and extraction tube and two 25 m
8、illiliter washings of each into an 800 milliliter beaker. Carefully evaporate off the petroleum ether on a steam plate in a hood and save the remaining fluid for further tests. CAUTION: Extra care should be taken as petroleum ether is extremely flammable. 4.6 Place the thimble in a 300 milliliter be
9、aker and carefully evaporate on steam bath in hood until all traces of petroleum ether have disappeared. 4.7 Dry the thimble in an oven at 210 5F (99 3C) for one hour. Cool and weigh to nearest 0.1 gram. 5.0 REPORT Calculation: % Petroleum ether insoluble = Weight of petroleum insoluble x 100 Weight
10、 of sample NUMBER: MPAPS BT-36 TITLE: Grease Extraction REVISION: 1802 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from IPD Technical Standards Team. Suppliers are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 2 of 2 Revision History Revision Level Change Approved by Date Approved 1802 Converted to MPAPS R. Goluch 2/13/2018
