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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[METRIC]

A-A-1543B

September 10, 1996

SUPERSEDING

A-A-1543A

May 14, 1982

COMMERCIAL ITEM DESCRIPTION

SOAP, BORAX (POWDERED)

1. Scope. 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 such as oils and greases.

2. Classification. The product shall be of the following classes:

2.1 Class 1- Plain.

2.2 Class 2- With lanolin.

3. Salient characteristics:

3.1 The product shall conform to ASTM D 3046- Powdered Hand Cleaner (Soap with Borax), except that paragraph 3.2 shall not apply.

3.1.1 Class 1- Class 1 shall comply with Type A of ASTM D 3046.

3.1.2 Class 2- Class 2 shall comply with Type B of ASTM D 3046.

3.2 The issue of ASTM D3046, in effect on the date of solicitation, shall be used to determine compliance with stated requirements.

3.3 Percent lanolin. The percent lanolin is determined calorimetrically based on the cholesterol present in lanolin. Cholesterol in chloroform solution in the presence of acetic anhydride and concentrated sulfuric acid produces a color which varies in intensity with the cholesterol concentration. Total cholesterol in the sample is determined, corrected for the cholesterol present in the soap, and the percent lanolin in the sample calculated.

3.3.1 Apparatus. Any commercial calorimeter having an approximate spectral range of 640 to 700 nanometers may be used to determine the absorbance of the samples. The instrument shall be adjusted to zero using a blank 25 ml of chloroform treated as specified in the color development section, omitting the lanolin.

3.3.2 Standard calibration curve. A sample of the batch of the lanolin used by the manufacturer to make the product being tested shall be collected at the time of manufacture and used to make the standard calibration curve. Place 0.2 g of this lanolin into a tared 50-ml beaker and weigh to the nearest milligram. Dissolve the lanolin chloroform, transfer quantitatively to a 200-ml volumetric flask and makeup to the mark with chloroform. Pipette exactly 3.0, 6.0, 9.0, 12.0, and 15.0 ml quantities of this lanolin solution into separate 50-ml glass-stoppered graduated cylinders. Add chloroform to each cylinder to yield 25 ml of solution in each and develop the color as specified below. Prepare a standard curve by plotting calorimeter readings versus the milligrams of lanolin in the graduated cylinder.

3.3.3 Procedure. Make all determinations in duplicate.

Beneficial comments, recommendations, additions, deletions, clarification, etc. and any data which may improve this document should be sent to: GSA, Paints and Chemicals Center, 400 18^th Street, S.W., Auburn, WA 98001.