Ammonium nitrate for industrial use — Determination of free acidity — Volumetric method
The principle of the analysis consists in titration of a test portion with a standard sodium hydroxide solution in the presence of methyl red/methylene blue mixed indicator.
Formaldehyde solutions for industrial use — Determination of iron content — 2,2'- Bipyridyl pho...
The specified method is applicable to the detection of Fe contents less than 0,0004 % (m/m). The principle consists in conversion of any iron present into the sulphate by evaporation to dryness in the presence of sulphuric acid, and reduction of iron (III) by means of hydroxylammonium chloride. Formation of a iron (II) 2,2'-bipyridyl complex. Photometric measurement of the coloured complex…
Formaldehyde solutions for industrial use — Determination of methanol content
The results obtained by this method will include the methanol freed from combined forms. These are however not usually present at higher levels to effect the results. The principle consists in esterfication of the methanol present with formic acid using sulphuric acid as a catalyst. Distillation of the methyl formate into sodium hydroxide solution and back-titration of the excess sodium hydroxide…
1. Scope
1.1 This Standard applies to household electric toys operating at nominal potentials of 120 volts or less, including extra low potential, and intended for use in ordinary (ie, non-hazardous) locations as defined in the Canadian Electrical Code Part I.
1.2 This Standard does not apply to battery operated toys:
(a) having a battery of a non-rechargeable (primary) type; and…
Formaldehyde solutions for industrial use — Limit test for heavy metals (excluding iron)
The method detects only the heavy metals present in non-complex form, the sulphides of which are precipitated in acid solution. The method is not specific for any one heavy metal. The principle consists in conversion of heavy metal, such as lead and copper, in acid solution to their sulphides, and comparison of the colour produced with that given by an aliquot volume of standard lead solution…
Covers the inspection requirements common to magnesium and
magnesium alloys and shall form a part of the material
specification in which the individual requirements of the
material are described.
Leather — Conditioning of test pieces for physical tests
Method is established in terms of temperature, relative humidity and time to reach equilibrium. Possible deviations from the standard reference atmosphere are mentioned. The procedure is applicable to all types of dry leather.
Aluminium alloy sand castings — Reference test bar
The standard specifies the dimensions and method of production of reference test bars for aluminium alloy sand castings. The figure shows the dimensions, in millimetres and in inches, of the reference test bar which is to be used, together with those of a mould pattern which allows the casting of four such bars.
