Texas Comptroller of Public Accounts

Texas Comptroller of Public Accounts, Glenn Hegar

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Texas Specification No. 485-18-01

Effective Date: May 15, 1978

Reformatted: February 5, 1996




1. SCOPE: This specification covers one type of heavy-duty, built synthetic detergent in concentrated liquid form. It is intended for use, after dilution with water in accordance with label instructions, in cleaning all types of hard, smooth surfaces including steel, glass, porcelain, plastic or ceramic tile, and sealed wood or cork. The surface may be painted, enameled, varnished, lacquered or bare. It is not intended nor recommended for stripping metal-crosslinked floor finish from floors. (For the latter use, see Texas Specification No. 485-54-09.)

2. APPLICABLE SPECIFICATIONS AND STANDARDS: References to specifications, standards and test methods shall be to the issues in effect on the date of the Invitation for Bids. Copies of the referenced documents may be ordered from the issuing organizations at the addresses shown. The following documents form a part of this specification to the extent specified herein:

2.1. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM), 1916 Race Street, Philadelphia, PA 19103:

2.1.1. ASTM D 1172 -- pH of Aqueous Solutions of Soaps and Detergents.


3.1. General Definitions: Terminology used in this specification is intended to be generic in nature and consistent with meanings that have been defined through general use and/or accepted trade practices. Where variant meanings may exist, the applicable interpretation shall be determined by the Texas Procurement and Support Services (TPASS).

3.1.1. Commission: Texas Procurement and Support Services (TPASS).

4. REQUIREMENTS: The detergent degreaser furnished under this specification shall meet or exceed the following minimum requirements:

4.1. Appearance and Stability: The product shall be a clear, homogeneous liquid, essentially free from sediment. It may be colored with a small amount of soluble dye, at the manufacturer's option. It shall show no turbidity or loss of stability when stored at 120 °F for 24 hours.

4.2. Composition: The identity and amounts of the ingredients shall be as shown in Table 1. Each raw material must comply with the corresponding Texas Specification.

4.3. pH: The pH of a sample of concentrate diluted with ten parts by volume of distilled water shall lie in the range 11.9 (minimum) to 12.5 (maximum), when determined in accordance with Paragraph 6.

4.4. Moisture and Other Matter: Moisture and other matter volatile at 105 °C shall not exceed 85.0% of the concentrate, and shall give a positive test for nonionic detergent in the procedure of Paragraph 6.



Ingredient Percent by Weight Minimum Percent by Weight Maximum Texas Specification
1. Sodium Xylenesulfonate, 40% 8.0 12.0 180-92-11
2. Tetrapotassium Pyrophosphate 2.0 4.0 180-74-04
3. Nonylphenoxy Polyethoxy Ethanol 3.0 5.0 180-92-09
4. Ethylene Glycol Monobutyl Ether 4.0 6.0 180-88-02
5. Trisodium Phosphate 1.5 2.5 180-36-01
6. Sodium Metasilicate 0.8 1.2 180-84-02
7. EDTA Tetrasodium Salt 2.0 3.0 180-34-01A
8. Soft Water 70.0 74.0

4.5. Nonvolatile Matter: Nonvolatile matter soluble in alcohol shall constitute at least 4.5% of the concentrate, and shall give a positive test for nonionic detergent in the procedure of Paragraph 6.

4.6. Total Alkalinity: Total alkalinity as Na2O shall constitute at least 1.5% of the concentrate when determined in accordance with Paragraph 6.

4.7. Total Silica: Total silica as SiO2 shall constitute at least 0.4% of the concentrate, when determined in accordance with Paragraph 6.

4.8. Total Phosphorus: Total phosphorus as P2O5 shall constitute at least 1.5% of the concentrate, when determined in accordance with Paragraph 6.

4.9. EDTA Tetrasodium Salt: Shall constitute at least 1.9% of the concentrate, calculated as EDTA tetrasodium salt meeting Texas Specification No. 180-34-01A, when determined in accordance with Paragraph 6.

5. SAMPLES: Unless otherwise specified in the Invitation for Bids, no prepurchase samples shall be required. Samples tested shall be taken from regular orders.

6. TESTING: Testing shall be done by or at the direction of, the Commission and/or the receiving State agency. Tests shall be performed on products from shipments to ordering agencies. In the event products tested fail to meet or exceed all conditions and requirements of this specification, the cost of the samples used and the cost of testing shall be borne by the supplier.

6.1. TESTS: The product furnished under this specification shall be tested by the following methods or equally applicable procedures:

6.1.1. pH: Determine by the procedure of ASTM D 1172, with the exception that the solution to be tested shall be prepared by diluting one part of concentrate with ten parts by volume of distilled water.

6.1.2. Water and other Volatile Matter: Weigh to the nearest 0.01 g a 50 g (approximate) sample in a 600 ml beaker. Evaporate in a vacuum oven at a pressure between 1 and 2 mm Hg, while gradually increasing the oven temperature to 105 °C over a one hour period. Determine the percent loss in weight.

6.1.3. Nonvolatile Matter Soluble in Alcohol: Extract the evaporation residue from the procedure of Paragraph 6.1.4. with 300 ml absolute denatured alcohol (Formula 3A) by gently boiling on a hot plate or steam bath and using a stirring rod to break up lumps. Decant the supernatant liquid through a Gooch crucible, retaining as much as possible of the solid in the beaker. Repeat with two successive 50 ml portions of solvent. Transfer the solid portion to the filter with further small portions of hot alcohol. Evaporate the filtrate at steam bath temperature, and finally to constant weight in an air oven at 105 °C. Determine the weight of the liquid residue as a percentage of the original sample. Apply a standard spot test for identification of nonionic surfactant.

6.1.4. Total Alkalinity as Na 2O: Dissolve the alcohol insoluble matter from the Gooch crucible (See Paragraph 6.1.3.) by washing with successive portions of hot water until a drop of the washings no longer gives an alkaline reaction with phenolphthalein. Titrate the resulting solution on a pH meter with standardized 1 N hydrochloric acid to an electrometric end point at about pH 4.3.

Calculation: % Na2O = ml HCl x N(HCl) x 3.1

g sample

6.1.5. Total Silica as SiO 2: To the solution resulting from the procedure of Paragraph 6.1.4. add 10 ml concentrated hydrochloric acid. Evaporate to dryness on a steam bath or hot plate at a temperature not greater than 120 °C. Cool, moisten with hydrochloric acid, breakup any lumps with a stirring rod, and let stand 5 to 10 minutes. Add 25 ml water, boil gently for 5 minutes, and filter through a small ashless filter paper. Wash with hot water. Evaporate the filtrate to dryness and repeat the previous step, using a new piece of filter paper. Carefully ignite the two dried filter papers and contents in a tarred platinum crucible until the paper is consumed, then heat strongly over a blast lamp. Cool in a desiccator, weigh, and repeat the ignition until constant weight is obtained. Calculate % SiO2 from the grain in weight of the crucible.

6.1.6. Total Phosphorus as P 2O5: Place the combined filtrate and washings from the procedure of Paragraph 6.1.5. in a 400 ml beaker and add 10 ml concentrated hydrochloric acid. Cover with a watch glass, boil gently for 30 minutes, and cool to room temperature. Dilute to about 200 ml, and place the beaker on the electrometric titration stand. Adjust the pH to about 3 with 50% sodium hydroxide solution, then to 4.3 with standard 1 N sodium hydroxide. Titrate to an electrometric end point at about pH 8.8.

Calculation: % P2O5 (apparent) = ml NaOH x N (NaOH) x 7.1

g sample

% P2O5 (corrected) = % P2O5 (apparent) - 0.1533 x % EDTA tetrasodium salt

Note: The procedure of Paragraph 6.1.7. must be completed before the correction for the above determination of P2O5 can be applied.

6.1.7. EDTA: Adjust the pH of the titration solution from the procedure of Paragraph 6.1.6. to 5 by the dropwise addition of acetic acid. remove the electrodes from the solution. Add four (4) drops of 1 - (2-pyridylazo) - 2 - naphthol indicator (PAN) solution (0.1% in methanol). Titrate with standardized cooper sulfate solution (2.5 g CuSO4 5H2O per liter) to a red end point. the copper sulfate solution must be standardized against a weighed amount of EDTA tetrasodium salt (Texas Specification No. 180-34-01A), to get the amount equivalent to one ml solution.

Calculation: % EDTA tetrasodium salt = A x B x 100


Where A = ml standard solution used

B = g EDTA tetrasodium salt equivalent to 1 ml standard solution

S = g sample

Note: Use this result to calculate the corrected value for percent phosphorus as P2O5 (See Paragraph 6.1.6.).

7. INSPECTION: Products furnished under this specification shall be inspected by, or at the direction of the Commission and/or the ordering State agency either at the destination or place of manufacture.

8. PACKING / PACKAGING: Packing for shipment shall be in accordance with the manufacturer's standard practice and in a manner readily accepted by common carriers engaged in interstate commerce and as specified in the Invitation for Bids. Within the shipping carton, units shall be packed in a manner designed to minimize damage during the shipment because of rough or improper handling.

8.1. Packaging: The concentrate shall neither affect nor be affected by the container in which it is supplied for a period of one (1) year from date of delivery. The concentrate shall be supplied in one or more of the following sizes and types of containers:

8.1.1. One (1) gallon (3.79 liters) plastic jugs (6 to a carton).

8.1.2. Five (5) gallon (18.9 liters) plastic jugs.


9.1. MARKING: Each shipping container shall be clearly marked with the following:

9.1.1. Name of contents.

9.1.2. Quantity contained.

9.1.3. Name and address of the manufacturer.

The following information shall either be marked on the container or appear on the shipping documents:

9.1.4. Order number or contract number.

9.15. Name and address of ordering agency.

9.1.6. Agency requisition number.

9.2. LABELING: Each product container shall bear a securely affixed and durable label showing the following:

9.2.1. Name and address of the manufacturer.

9.2.2. Trade name of the product, if any.

9.2.3. Net contents, U.S. liquid gallons (liters)

9.2.4. Directions for use, including precautions and first aid measures.

10. COMPLIANCE: In order for consideration to be given to the bid on an item under this specification, the bidder must comply with the following:

10.1. PRODUCT IDENTIFICATION: The make, model number, name of the manufacturer, brand or trade name, etc., as applicable, of the item which the vendor proposes to furnish must be stated as part of the bid.

10.2. EXCEPTIONS: Notwithstanding the above, any exception taken by the bidder to the requirements and conditions of this specification must be stated and described in detail as a part of the bid. If no exceptions or deviations are identified in this manner, the items must be furnished exactly as described herein.

10.3. PROOF: The bidder shall bear the burden of proof of compliance with this specification.

11. ORDERING DATA: When ordering products conforming to this specification the requisitioning agency shall specify the following:

11.1. The number of this specification ((485-18-01).

11.2. The quantity desired (gallons or liters).

11.3. Number and size of containers.

12. PRODUCT INFORMATION: This product can be used as received, particularly when applied from a trigger-type spray container, for cleaning exceptionally greasy or heavily soiled equipment or other surfaces. For somewhat lighter duty, it can be diluted with water at from 1:10 to 1:50 strength, according to instructions on the label. Due to its highly alkaline nature, the product should be prevented from touching the skin by the use of rubber or plastic gloves. Follow directions on the label for treatment in case of contact with skin or eyes or accidental swallowing.

13. AVAILABILITY OF SPECIFICATIONS: Copies of this specification may be obtained by calling or writing:

Bid Services

Texas Procurement and Support Services

P.O.Box 13186

Austin, TX 78711-3047

(512) 463-3416

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