A-A-1543 Soap, Borax (Powdered)This commercial item description covers a powdered hand cleaner product, consisting of soap and borax for use in washroom dispensers to remove heavy occupational soils as oils and greases.

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CID A-A-1543

3.3.4 Sample preparation. Place 10 g each of the well-mixed product and the soap portion into separate tared Soxhlet extraction thimbles and weigh to the nearest milligram. Extract with petroleum ether in a Soxhlet apparatus for 3 hours. Evaporate the petroleum ether solution to dryness on a steam bath. Dissolve the residue in chloroform, transfer quantitatively to a 250-ml volumetric flask and make up to the mark with chloroform. Pipette 10 ml of the chloroform solution into a 50-ml glass stoppered cylinder and add chloroform to the 25 ml mark.

3.3.5 Color development. Cool the cylinder in an ice bath for 5 minutes. Pipette 10 ml of acetic anhydride into the cylinder and then add concentrated sulfuric acid dropwise from a 1-ml graduated pipette at a rate of 2 drops per minute for 7 minutes and 3 drops per minute for the next 3 minutes, stoppering the cylinder after each acid addition and mixing thoroughly by inverting the cylinder several times. Keep the cylinder in the ice bath between additions of acid. Remove the cylinder from the bath and store in a dark place for exactly 20 minutes and then determine the color intensity in the calorimeter.

3.3.6 Calculations. For every sample of the finished product and soap portion calculate the “equivalent percent lanolin as follows:

Equivalent percent lanolin*=2.5 X (A/B)

Where:

A= mg of lanolin from the standard curve equivalent to the measured color intensity of the sample.

B= weight in grams of the sample.

The percent lanolin in the finished product shall be calculated as follows:

Percent lanolin + C-DXE/100

Where:

C= average “equivalent percent lanolin” in the finished product.

D= average “equivalent percent lanolin” in the soap portion

E= percent soap in the finished product

4. QUALITY ASSURANCE PROVISIONS:

4.1 Product Conformance. The products provided shall meet the salient characteristics of this commercial item description, conform to the producer’s own drawings, specifications, standards, and quality assurance practices and be the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance.

5. Packaging, packing, and marking. The packaging, packing, and marking shall be as specified in the contract or order.