{"id":2380,"date":"2026-09-18T07:19:02","date_gmt":"2026-09-18T07:19:02","guid":{"rendered":"https:\/\/py-catglobal.com\/?p=2380"},"modified":"2026-09-18T08:09:15","modified_gmt":"2026-09-18T08:09:15","slug":"sodium-vs-calcium-bentonite","status":"publish","type":"post","link":"https:\/\/py-catglobal.com\/ja\/sodium-vs-calcium-bentonite\/","title":{"rendered":"Sodium vs Calcium Bentonite Cat Litter \u2014 Which Grade Should You Buy?"},"content":{"rendered":"

Not all bentonite is created equal. Sodium bentonite and calcium bentonite look the same in the bag but behave completely differently in the litter box. This guide helps B2B buyers pick the right grade \u2014 and avoid the most common substitution trap.<\/p>\n

Need the buyer’s perspective first? See the bulk B2B buying guide<\/a>. For the full spec deep-dive, see the sodium bentonite spec guide<\/a>.<\/p>\n

 <\/p>\n

\"bulk<\/p>\n

 <\/p>\n

1. Why the grade matters \u2014 and why buyers get tricked<\/h2>\n
\n

B2B buyers searching for bentonite cat litter manufacturer<\/b>, bentonite cat litter factory<\/b>, wholesale bentonite cat litter<\/b>, or bulk bentonite cat litter<\/b> usually assume there is one product called “bentonite cat litter”. There are two \u2014 sodium bentonite<\/b> (clumping grade) and calcium bentonite<\/b> (absorbent grade) \u2014 and they behave completely differently. The price difference between them (typically 15\u201325% lower for calcium) is the bait; the difference in clumping is the trap.<\/p>\n

Cat Global ships sodium bentonite only<\/b> \u2014 because we sell clumping cat litter and only sodium bentonite clumps. This guide explains what each grade does, why the substitution happens, and how to verify the grade on every shipment.<\/p>\n

 <\/p>\n

2. Side-by-side comparison<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Axis<\/th>\nSodium bentonite (Cat Global)<\/th>\nCalcium bentonite (non-clumping)<\/th>\n<\/tr>\n<\/thead>\n
\u51dd\u96c6<\/b><\/td>\nYes \u2014 rock-hard, 3 seconds<\/b><\/td>\nNo \u2014 absorbs liquid but does not form a scoopable clump<\/td>\n<\/tr>\n
Swelling index<\/b><\/td>\n12 \u2013 15\u00d7 dry volume<\/td>\n3 \u2013 6\u00d7 dry volume (limited expansion)<\/td>\n<\/tr>\n
Sweeping mechanism<\/b><\/td>\nSodium ions in clay absorb water; platelets expand and lock liquid<\/td>\nAbsorbs liquid into porous structure; no platelet expansion<\/td>\n<\/tr>\n
Deodorisation<\/b><\/td>\n88 \u2013 92% (cation-exchange locks ammonia)<\/td>\n50 \u2013 70% (absorption only, no chemical lock)<\/td>\n<\/tr>\n
Dust content (Cat Global spec)<\/b><\/td>\n\u2264 0.5% (low-dust grade)<\/td>\n1.5 \u2013 3.0% (higher inherent dust)<\/td>\n<\/tr>\n
pH<\/b><\/td>\n8.5 \u2013 9.5 (typical bentonite range \u00b7 cat-safe)<\/td>\n6.0 \u2013 8.5 (more neutral)<\/td>\n<\/tr>\n
Bulk density<\/b><\/td>\n0.75 \u2013 0.88 g\/ml (heavy)<\/td>\n0.55 \u2013 0.75 g\/ml (lighter)<\/td>\n<\/tr>\n
Per-ton FOB Dalian<\/b><\/td>\nMid (premium clumping grade)<\/td>\nLow (15\u201325% cheaper than sodium)<\/td>\n<\/tr>\n
Best shelf tier<\/b><\/td>\nMulti-cat households, clumping positioning<\/td>\nNon-clumping positioning (rare in modern shelf programs)<\/td>\n<\/tr>\n
Best markets<\/b><\/td>\nGlobal \u2014 95%+ of clumping cat litter sold globally<\/td>\nSpecialty absorbent litter programs (rare)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/h2>\n

3. The clumping question \u2014 why only sodium works<\/h2>\n
\n

The clumping reaction is what makes sodium bentonite irreplaceable for modern cat litter. Here’s the chemistry in plain language:<\/p>\n