ASTM D235 specification for mineral spirits
ASTM D235 standard specification for mineral spirits (petroleum spirits) (hydrocarbon dry cleaning solvent)
6. Test Methods
6.1 The properties enumerated in this specification shall be determined in accordance with the following ASTM test methods:
6.1.1 Bromine Number - Test Method D1159. Bromine number is expressed as g bromine reacted per 100-g sample. For products having low olefin contents, Bromine Index (mg bromine reacted per 100-g sample) by Test Method D2710 may be used.
6.1.2 Color - Test Method D156 or Test Method D1209. In case of dispute, Test Method D156 shall be the referee method.
6.1.3 Corrosion - Test Method D130. Perform test under the prescribed conditions for 3 h at 100°C.
6.1.4 Distillation - Test Method D86.
6.1.5 Flash Point - Test Method D56 or Test Methods D3278. In case of dispute, Test Method D56 shall be the referee method.
6.1.6 Kauri-Butanol Value - Test Method D1133.
6.1.7 Odor - Test Method D1296. Samples of particular types of products being tested, having odor characteristics satisfactory to consumer and producer, are to be used as reference standards for comparison.
6.1.8 Mercaptan Sulfur - Test Method D3227.
6.1.9 Apparent Specific Gravity - Determine the apparent specific gravity by any convenient method that is accurate to the third decimal place, the temperature of both specimen and water being 15.6°C. See Guide D268.
6.1.10 Doctor Test:
6.1.10.1 Preparation of Doctor (Sodium Plumbite) Solution - Dissolve approximately 125 g of sodium hydroxide (NaOH) in 1 L of reagent water. Add 60 g of lead monoxide (PbO) and shake vigorously for 15 min., or let stand with occasional shakings for at least a day. Allow to settle and decant or siphon off the clear liquid. If the solution does not settle clear, filter it through filter paper. Keep the solution in a tightly corked bottle and refilter before use if not perfectly clear.
6.1.10.2 Procedure - Shake vigorously together in a test tube 10 mL of the solvent being tested and 5 mL of sodium plumbite solution for about 15 s. Add a small amount of pure, dry flowers of sulfur so that practically all of it floats on the interface between the solvent and the sodium plumbite solution after shaking. Again shake for 15 s, allow to settle and observe within 2 min.
6.1.10.3 Interpretation of Results - If the solvent is discolored or if the yellow color of the sulfur film is noticeably masked, consider the test positive and the solvent as "sour". If the sample remains unchanged in color and the sulfur film is bright yellow or only slightly discolored with gray or flecked with black, consider the test negative and the solvent as "sweet".
6.1.10.4 If the doctor test result is positive, mercaptan content may be determined using Test Method D3227 and reported.
6.1.11 Aromatics - Test Methods D3257.
7. Packaging and Package Marking
7.1 Package size shall be agreed upon by the purchaser and the supplier.
7.2 Packaging shall conform to applicable carrier rules and regulations or when specified shall conform to Fed. Spec. PPP-C-2020.
8. Keywords
8.1 Doctor test; hydrocarbon dry cleaning solvents; mineral spirits; solvents; Stoddard Solvent
