{"id":58085,"date":"2026-04-06T16:38:49","date_gmt":"2026-04-06T14:38:49","guid":{"rendered":"https:\/\/chestxray.co.za\/?post_type=product&#038;p=58085"},"modified":"2026-04-06T16:39:29","modified_gmt":"2026-04-06T14:39:29","slug":"formaldehyde-37-ar-2-5l","status":"publish","type":"product","link":"https:\/\/chestxray.co.za\/?product=formaldehyde-37-ar-2-5l","title":{"rendered":"Formaldehyde 37 % AR 2.5L"},"content":{"rendered":"<p>Formaldehyde 37 % Analytical Reagent 2.5L<\/p>\n<p><strong>Lead Time: 2-5 Days<\/strong><\/p>\n<ul>\n<li>Formaldehyde 37 % Analytical Reagent 2.5L<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td>grade<\/td>\n<td>ACS reagent<\/td>\n<\/tr>\n<tr>\n<td>vapor density<\/td>\n<td>1.03 (vs air)<\/td>\n<\/tr>\n<tr>\n<td>vapor pressure<\/td>\n<td>52 mmHg ( 37 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>52 mmHg ( 37 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>assay<\/td>\n<td>36.5-38.0%<\/td>\n<\/tr>\n<tr>\n<td>autoignition temp.<\/td>\n<td>572 \u00b0F<\/td>\n<\/tr>\n<tr>\n<td>contains<\/td>\n<td>10-15% Methanol as stabilizer (to prevent polymerization)<\/td>\n<\/tr>\n<tr>\n<td>concentration<\/td>\n<td>37 wt. % in H2O<\/td>\n<\/tr>\n<tr>\n<td>impurities<\/td>\n<td>\u22640.006 meq\/g Titr. acid<\/td>\n<\/tr>\n<tr>\n<td>ign. residue<\/td>\n<td>\u22640.005%<\/td>\n<\/tr>\n<tr>\n<td>color<\/td>\n<td>APHA: \u226410<\/td>\n<\/tr>\n<tr>\n<td>refractive index<\/td>\n<td><i>n<\/i>20\/D 1.3765<\/td>\n<\/tr>\n<tr>\n<td>density<\/td>\n<td>1.09 g\/mL at 25 \u00b0C (lit.)<\/td>\n<\/tr>\n<tr>\n<td>anion traces<\/td>\n<td>chloride (Cl\u2013): \u22645 ppm<\/td>\n<\/tr>\n<tr>\n<td>sulfate (SO42-): \u22640.002%<\/td>\n<\/tr>\n<tr>\n<td>cation traces<\/td>\n<td>Fe: \u22645 ppm<\/td>\n<\/tr>\n<tr>\n<td>heavy metals: \u22645 ppm (by ICP-OES)<\/td>\n<\/tr>\n<tr>\n<td>suitability<\/td>\n<td>suitable for manufacturing use (Laboratory chemicals)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Formaldehyde 37 % Analytical Reagent 2.5L<\/p>\n<p><strong>Lead Time: 2-5 Days<\/strong><\/p>\n<ul>\n<li>Formaldehyde 37 % Analytical Reagent 2.5L<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td>grade<\/td>\n<td>ACS reagent<\/td>\n<\/tr>\n<tr>\n<td>vapor density<\/td>\n<td>1.03 (vs air)<\/td>\n<\/tr>\n<tr>\n<td>vapor pressure<\/td>\n<td>52 mmHg ( 37 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>52 mmHg ( 37 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>assay<\/td>\n<td>36.5-38.0%<\/td>\n<\/tr>\n<tr>\n<td>autoignition temp.<\/td>\n<td>572 \u00b0F<\/td>\n<\/tr>\n<tr>\n<td>contains<\/td>\n<td>10-15% Methanol as stabilizer (to prevent polymerization)<\/td>\n<\/tr>\n<tr>\n<td>concentration<\/td>\n<td>37 wt. % in H2O<\/td>\n<\/tr>\n<tr>\n<td>impurities<\/td>\n<td>\u22640.006 meq\/g Titr. acid<\/td>\n<\/tr>\n<tr>\n<td>ign. residue<\/td>\n<td>\u22640.005%<\/td>\n<\/tr>\n<tr>\n<td>color<\/td>\n<td>APHA: \u226410<\/td>\n<\/tr>\n<tr>\n<td>refractive index<\/td>\n<td><i>n<\/i>20\/D 1.3765<\/td>\n<\/tr>\n<tr>\n<td>density<\/td>\n<td>1.09 g\/mL at 25 \u00b0C (lit.)<\/td>\n<\/tr>\n<tr>\n<td>anion traces<\/td>\n<td>chloride (Cl\u2013): \u22645 ppm<\/td>\n<\/tr>\n<tr>\n<td>sulfate (SO42-): \u22640.002%<\/td>\n<\/tr>\n<tr>\n<td>cation traces<\/td>\n<td>Fe: \u22645 ppm<\/td>\n<\/tr>\n<tr>\n<td>heavy metals: \u22645 ppm (by ICP-OES)<\/td>\n<\/tr>\n<tr>\n<td>suitability<\/td>\n<td>suitable for manufacturing use (Laboratory chemicals)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":58121,"template":"","meta":[],"product_brand":[],"product_cat":[24937],"product_tag":[15301],"class_list":["post-58085","product","type-product","status-publish","has-post-thumbnail","product_cat-other-miscellaneous-other-disposable-consumables-items","product_tag-formaldehyde-37-ar-2-5l","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product\/58085","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/media\/58121"}],"wp:attachment":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=58085"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=58085"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=58085"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=58085"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}