A-A-694 Sodium Chloride, TechnicalThis commercial item description (CID) covers two types and three forms of crystalline sodium chloride (salt) used for water conditioning. It shall be suitable for ion-exchange columns in which sodium chloride is used for regeneration.

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A-A-694E

TABLE I. Chemical properties.

Chemical requirements	Limits
	Type I	Type II
Moisture, percent, maximum	0.5	0.5
Sodium chloride, percent, minimum (dry basis)	97.5	99.5
Water-soluble impurities, percent maximum (dry basis) Calcium & magnesium (Ca&Mg) Sulfate (SO₄)	0.75 1.25	0.15 0.35
Water-insoluble impurities, percent, maximum (dry basis)	0.50	0.05
Soluble & insoluble impurities, percent maximum (dry basis)	2.50	0.50
Grease, fat, and oil, percent, maximum	0.01	0.01
pH	5.0 to 9.5	5.0 to 9.5

3.4 Physical properties. The sodium chloride shall meet the physical requirements of table II when tested in accordance with American Society for Testing and Materials (ASTM) C 136, "Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates" (DoD adopted), and ASTM E 11, "Standard Specification for Wire Cloth and Sieves for Testing Purposes" (DoD adopted).

TABLE II. Physical properties.

Particle size analysis, cumulative percent passing review
Sieve	19.0 mm (3/4 in.)	9.5 mm (3/8 in.)	6.35 mm (1/4 in.)	3.35 mm No. 6	2.00 mm No. 10	1.70 mm No. 12	150 um No. 100
Form 1	100 min.	-	15 max.	8 max.	-	-	-
Form 2	100 min.	95 min.	-	-	20 max.	5 max.	-
Form 3	-	-	-	-	100 min.	-	5 max.

4. REGULATORY REQUIREMENTS

4.1 Recovered materials. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR).