{"id":3561,"date":"2026-10-09T08:46:07","date_gmt":"2026-10-09T00:46:07","guid":{"rendered":"http:\/\/www.meovat9.com\/blog\/?p=3561"},"modified":"2026-10-09T08:46:07","modified_gmt":"2026-10-09T00:46:07","slug":"what-are-the-physical-properties-of-ammonium-citrate-dibasic-435e-f3e31c","status":"publish","type":"post","link":"http:\/\/www.meovat9.com\/blog\/2026\/10\/09\/what-are-the-physical-properties-of-ammonium-citrate-dibasic-435e-f3e31c\/","title":{"rendered":"What are the physical properties of Ammonium Citrate Dibasic?"},"content":{"rendered":"

Hey everyone, let\u2019s cut to the chase\u2014if you\u2019re someone who works with food additives, pharma excipients, lab reagents, or even cleaning products, you\u2019ve probably crossed paths with ammonium citrate dibasic, right? I\u2019m gonna break down its physical properties like I\u2019m chatting with a fellow supplier buddy, no stuffy textbook jargon, just the real, usable deets that matter when you\u2019re sourcing or working with this stuff. Ammonium Citrate Dibasic<\/a><\/p>\n

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First off, what is ammonium citrate dibasic anyway? For the uninitiated, it\u2019s a salt formed from citric acid and ammonia, with that \u201cdibasic\u201d part meaning it has two replaceable hydrogen ions left from citric acid\u2019s original three. Now, the physical traits are the stuff you can see, touch, test in a bucket, or in a lab beaker\u2014this isn\u2019t about its chemical reactivity (we\u2019ll save that for another post), it\u2019s the tangible stuff that makes it easy to handle, store, and use in your operations.<\/p>\n

Let\u2019s start with the most basic: how it looks. If you\u2019ve ever opened a bag of ammonium citrate dibasic (ACD, let\u2019s call it that from here on to save time), you won\u2019t see those weird, giant salt crystals like rock salt. No, it\u2019s fine, mostly a white or off-white powder. Wait, I said \u201cmostly\u201d because we\u2019ve had a few batches that leaned a tiny bit yellow, but that\u2019s super rare\u2014only if something went wonky in the manufacturing drying step, and we toss those immediately, trust me. It\u2019s not super fine like baby powder, but it\u2019s fine enough to pour easily, no clumps (unless it\u2019s gotten damp, which we\u2019ll talk about in storage next).<\/p>\n

Next up, solubility\u2014this is a big one, especially for our food and pharma clients who need it to dissolve cleanly, no residue. ACD is hella soluble in water. Like, I\u2019m talking you can mix 100 grams of it into just 100 mL of room temp water, and it\u2019ll dissolve completely in like, a minute if you stir a little. That\u2019s a high solubility level\u2014way higher than table salt, for reference. The kicker? It\u2019s barely soluble in alcohol. We\u2019re talking only like 0.5 grams dissolves in 100 mL of ethanol, so if you\u2019re working with alcohol-based formulas, it\u2019s not gonna muck up that part, which is a huge win for lab folks or beverage manufacturers who need it to stay in an aqueous system.<\/p>\n

Then there\u2019s its density, which matters for shipping and storage\u2014you don\u2019t want to order a pallet and be surprised by how much space it takes, or how much a drum weighs. Its bulk density (that\u2019s the loose, poured powder weight per volume) is roughly 0.6 to 0.8 g\/cm\u00b3. So a standard 25 kg bag? It\u2019s about half a cubic foot, if you\u2019re used to imperial measurements. The true density (the actual mass of the solid, no gaps between particles) is higher, around 1.5 g\/cm\u00b3, but bulk is what you care about for moving and storing. And that low bulk density means it\u2019s light, so shipping costs don\u2019t get crazy\u2014we pass that savings on to clients, by the way, just sayin\u2019.<\/p>\n

Now, melting point? Wait, important\u2014ACD doesn\u2019t have a true melting point at standard pressure. It decomposes before it melts, around 185\u00b0C (365\u00b0F). That means if you heat it up that hot, it starts breaking down, giving off ammonia gas (that\u2019s the pungent smell you might notice if you leave a bag open in a hot warehouse) and forming other compounds like citraconic acid. So if you\u2019re using it in a process that heats stuff up, you can\u2019t crank it past that temp without changing its composition. Good to know if you\u2019re making something that involves high-heat steps, like baked goods or certain industrial coatings.<\/p>\n

pH is another physical property, not chemical reactivity\u2014pH is just a measure of how acidic or basic a solution is, right? When you dissolve ACD in water, a 1% solution has a pH of around 7 to 8. That\u2019s slightly basic, neutral enough that it doesn\u2019t mess with most formulas unless you\u2019re super picky about pH levels. We test every batch for this, by the way, because if the pH is off, it\u2019s either too acidic or too basic, and it\u2019s useless for a lot of uses (like food where pH needs to be tight for preservation).<\/p>\n

What about its ability to absorb moisture (hygroscopicity)? This is a make-or-break for storage. ACD is mildly hygroscopic\u2014so it will pick up a little moisture from the air, but not as bad as something like magnesium chloride. We store our bulk product in climate-controlled warehouses at around 40-50% humidity, and it stays free-flowing for months. If you leave a bag open in a damp garage, yeah, it\u2019ll clump up, but that\u2019s user error, not bad product. We always tell clients to seal bags tight after opening, and if they need to store it long-term, use airtight drums, not just plastic bags.<\/p>\n

Let\u2019s talk about texture and feel, just because it\u2019s relatable. When you rub a little ACD powder between your fingers, it\u2019s soft, not gritty at all. No sharp edges, so it\u2019s not going to scratch mixing tanks or clog small filters\u2014something our pharma clients love because they use it in injectable formulations, where even tiny particles can be a problem. We\u2019ve had a client in the lab supply space say our ACD\u2019s particle size is super consistent, so they don\u2019t have to filter it twice. That\u2019s because we control the grinding and screening steps, so 95% of our particles are between 100 and 200 mesh\u2014no tiny dust particles that get airborne, no big chunks that don\u2019t dissolve.<\/p>\n

Wait, should I mention things that don\u2019t happen? Like, it\u2019s odorless when it\u2019s dry. Only when it gets damp or heated does that ammonia smell come through, which is a good way to tell if it\u2019s going bad before it affects your product. And it\u2019s not flammable\u2014we never have to worry about it catching fire or exploding in a warehouse, which is a huge safety win for our manufacturing clients who store lots of chemicals.<\/p>\n

Let me tie this all together because I know a lot of you read this looking for practical stuff, not just a list of facts. All these physical properties add up to why ACD is so versatile: high water solubility means it mixes perfectly into beverages or cleaning solutions; mild pH means it won\u2019t alter the taste or acidity of food; low hygroscopicity means it doesn\u2019t clump during shipping or storage, so you don\u2019t get unusable powder when you open a bag; non-flammable and low bulk density mean it\u2019s safe and cheap to transport. And for lab folks, the consistent particle size and purity (wait, we didn\u2019t talk about purity, but that\u2019s tied to physical traits\u2014our product is 99%+ pure, so no weird residues) make it perfect for titrations or buffer solutions.<\/p>\n

If you\u2019re still with me, you\u2019re probably someone who actually uses ACD and knows how frustrating it is when a supplier sends product that doesn\u2019t meet your needs. Like, ordering a powder that\u2019s too gritty and clogs your system, or one that dissolves half-way because it\u2019s low quality. That\u2019s why as a supplier, we test every single batch for all these physical properties before it leaves our facility. We don\u2019t just check purity\u2014we test solubility, pH, particle size, moisture content, all the stuff that matters to you. We even send a small sample with every bulk order so you can test it in your own lab before you do a full run.<\/p>\n

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If you\u2019re looking to stock up, or if you have questions about how these properties work for your specific use case (like, if you\u2019re making a natural cleaning product and need it to dissolve in water without leaving residue, or if you\u2019re a food manufacturer needing it as an emulsifier), hit us up. We\u2019re here to talk through your needs, not just sell you a bag of powder.<\/p>\n

Ferrous Oxalate<\/a> References:<\/p>\n