NF EN ISO 9455-6

<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">This document specifies three quantitative methods for the determination of the ionic halide (excluding fluoride) content of soldering fluxes. Halides are calculated as chlorides. A useful qualitative test method for the detection of ionic halides is also described.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">Method A is a potentiometric titration method for the determination of halide (excluding fluoride) content and is applicable to flux classes 1 and 2, defined in <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">9454</span></span></span>-<span class="stddocPartNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">1</span></span></span>. This method, which is considered the reference method for these fluxes, is suitable for halide contents generally within the range of 0,05 % mass fraction to 2 % mass fraction in the non-volatile matter of the flux.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">Method B is a titration method for the determination of the total halide (excluding fluoride) content of water-soluble fluxes. It is applicable to flux classes 2122 to 2124, 3112 to 3114 and 3212 to 3214, as defined in <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">9454</span></span></span>-<span class="stddocPartNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">1</span></span></span>.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">Method C is a titration method for the determination of the halide (excluding fluoride) content of water-soluble fluxes containing phosphates and is applicable to flux class 331, as defined in <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">9454</span></span></span>-<span class="stddocPartNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">1</span></span></span>.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt;">Method D is a qualitative test, using silver chromate test paper, for the presence of ionic halides. The technique can be used for all classes of flux.</span></p>