{"id":70328,"date":"2026-05-02T06:10:34","date_gmt":"2026-05-02T04:10:34","guid":{"rendered":"https:\/\/chestxray.co.za\/?post_type=product&p=70328"},"modified":"2026-05-02T06:10:45","modified_gmt":"2026-05-02T04:10:45","slug":"potassium-phosphate-monobasic-500g","status":"publish","type":"product","link":"https:\/\/chestxray.co.za\/?product=potassium-phosphate-monobasic-500g","title":{"rendered":"Potassium Phosphate Monobasic 500g"},"content":{"rendered":"

Potassium Phosphate Monobasic 500g<\/p>\n

Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS).<\/p>\n

It has also been used in the preparation of PEG1000 (poly ethylene glycol)\/potassium phosphate aqueous two-phase systems.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
grade<\/td>\nACS reagent<\/td>\n<\/tr>\n
assay<\/td>\n\ufffd\ufffd\ufffd99.0%<\/td>\n<\/tr>\n
impurities<\/td>\n\ufffd\ufffd\ufffd0.01% Insoluble matter<\/td>\n<\/tr>\n
loss<\/td>\n\ufffd\ufffd\ufffd0.2% loss on drying, 105\ufffd\ufffdC<\/td>\n<\/tr>\n
pH<\/td>\n4.1-4.5 (25 \ufffd\ufffdC, 5%)<\/td>\n<\/tr>\n
pKa (25 \ufffd\ufffdC)<\/td>\n(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)<\/td>\n<\/tr>\n
mp<\/td>\n252.6 \ufffd\ufffdC (lit.)<\/td>\n<\/tr>\n
density<\/td>\n2.338 g\/mL at 25 \ufffd\ufffdC (lit.)<\/td>\n<\/tr>\n
anion traces<\/td>\nchloride (Cl\ufffd\ufffd\ufffd): \ufffd\ufffd\ufffd0.001%<\/td>\n<\/tr>\n
sulfate (SO42-): \ufffd\ufffd\ufffd0.003%<\/td>\n<\/tr>\n
cation traces<\/td>\nFe: \ufffd\ufffd\ufffd0.002%<\/td>\n<\/tr>\n
Na: \ufffd\ufffd\ufffd0.005%<\/td>\n<\/tr>\n
heavy metals: \ufffd\ufffd\ufffd0.001% (by ICP-OES)<\/td>\n<\/tr>\n
SMILES string<\/td>\n[K+].OP(O)([O-])=O<\/td>\n<\/tr>\n
InChI<\/td>\n1S\/K.H3O4P\/c;1-5(2,3)4\/h;(H3,1,2,3,4)\/q+1;\/p-1<\/td>\n<\/tr>\n
InChI key<\/td>\nGNSKLFRGEWLPPA-UHFFFAOYSA-M<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n
  • Potassium Phosphate Monobasic 500g<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

    Potassium Phosphate Monobasic 500g<\/p>\n

    Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS).<\/p>\n

    It has also been used in the preparation of PEG1000 (poly ethylene glycol)\/potassium phosphate aqueous two-phase systems.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    grade<\/td>\nACS reagent<\/td>\n<\/tr>\n
    assay<\/td>\n\ufffd\ufffd\ufffd99.0%<\/td>\n<\/tr>\n
    impurities<\/td>\n\ufffd\ufffd\ufffd0.01% Insoluble matter<\/td>\n<\/tr>\n
    loss<\/td>\n\ufffd\ufffd\ufffd0.2% loss on drying, 105\ufffd\ufffdC<\/td>\n<\/tr>\n
    pH<\/td>\n4.1-4.5 (25 \ufffd\ufffdC, 5%)<\/td>\n<\/tr>\n
    pKa (25 \ufffd\ufffdC)<\/td>\n(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)<\/td>\n<\/tr>\n
    mp<\/td>\n252.6 \ufffd\ufffdC (lit.)<\/td>\n<\/tr>\n
    density<\/td>\n2.338 g\/mL at 25 \ufffd\ufffdC (lit.)<\/td>\n<\/tr>\n
    anion traces<\/td>\nchloride (Cl\ufffd\ufffd\ufffd): \ufffd\ufffd\ufffd0.001%<\/td>\n<\/tr>\n
    sulfate (SO42-): \ufffd\ufffd\ufffd0.003%<\/td>\n<\/tr>\n
    cation traces<\/td>\nFe: \ufffd\ufffd\ufffd0.002%<\/td>\n<\/tr>\n
    Na: \ufffd\ufffd\ufffd0.005%<\/td>\n<\/tr>\n
    heavy metals: \ufffd\ufffd\ufffd0.001% (by ICP-OES)<\/td>\n<\/tr>\n
    SMILES string<\/td>\n[K+].OP(O)([O-])=O<\/td>\n<\/tr>\n
    InChI<\/td>\n1S\/K.H3O4P\/c;1-5(2,3)4\/h;(H3,1,2,3,4)\/q+1;\/p-1<\/td>\n<\/tr>\n
    InChI key<\/td>\nGNSKLFRGEWLPPA-UHFFFAOYSA-M<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
    • Potassium Phosphate Monobasic 500g<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","meta":{"content-type":""},"product_brand":[],"product_cat":[4114],"product_tag":[21834],"class_list":{"0":"post-70328","1":"product","2":"type-product","3":"status-publish","5":"product_cat-laboratory-chemicals","6":"product_tag-potassium-phosphate-monobasic-500g","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product\/70328","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:attachment":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=70328"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=70328"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=70328"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=70328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}