Non-GMO Project Verified Supplier Since 2012
Sodium Citrate Dihydrate Bulk Supplier of Trisodium Citrate
Captain Drake supplies sodium citrate dihydrate trisodium citrate, CAS 6132-04-3, E331 in FCC and USP grades, Non-GMO Project Verified and produced from non-GMO cane sugar and tapioca feedstock in Thailand and Colombia. Available as granular and fine granular in 50 lb bags, 25 kg bags and 2,250 lb tote sacks, LTL through full truckloads of 42,500 lbs, from 12 US warehouses.
Start Here
What Is Sodium Citrate Dihydrate?
It is the sodium salt of citric acid carrying two water molecules of crystallisation CAS 6132-04-3, E331. It appears on specifications and certificates under several names that all describe the same material: trisodium citrate dihydrate, tri sodium citrate dihydrate, sodium citrate tribasic dihydrate, or simply sodium citrate.
That ambiguity matters. Three sodium salts of citric acid exist, so a specification reading only “sodium citrate” has not actually specified anything. Written without qualification, it almost always means the trisodium dihydrate form below.
| Name | CAS | E-number | Common use |
|---|---|---|---|
| Trisodium citrate dihydrate (this product) | 6132-04-3 | E331(iii) | The default. Buffering, emulsification, sequestration |
| Trisodium citrate anhydrous | 68-04-2 | E331(iii) | Where bound water must be avoided |
| Disodium citrate | 144-33-2 | E331(ii) | Specialist buffering systems |
| Monosodium citrate | 18996-35-5 | E331(i) | Acidic buffering, effervescent formats |
Technical Data
Sodium Citrate Dihydrate Specification, Formula and Molecular Weight
The chemical formula for sodium citrate dihydrate is Na3C6H5O7·2H2O and its molecular weight is 294.10 g/mol. The anhydrous form is 258.07 g/mol — an 8.5% difference that matters when you are dosing by weight.
| Chemical name | Trisodium Citrate Dihydrate |
|---|---|
| Synonyms | Sodium citrate, sodium citrate tribasic dihydrate, tri sodium citrate dihydrate |
| CAS number | 6132-04-3 |
| EINECS | 200-675-3 |
| E-Number | E331 (E331iii) |
| Molecular formula | Na3C6H5O7·2H2O |
| Molecular weight | 294.10 g/mol |
| Grades available | FCC, USP, Food Grade |
| Assay | 99.0 – 100.5% (dried basis) |
| Appearance | White granular crystals or crystalline powder |
| Particle sizes | Granular, Fine Granular |
| Solubility | Freely soluble in water; practically insoluble in ethanol |
| pH (5% solution) | 7.5 – 9.0 |
| Feedstock | Non-GMO cane sugar / non-GMO tapioca starch |
| Country of origin | Thailand, Colombia |
| Shelf life | 36 months in unopened original packaging |
| Certifications | Non-GMO Project Verified, Kosher, Halal, ISO 9001 / 14001 / 22000 |
Bulk Supply
Sodium Citrate for Sale Bulk Supply and Purchasing
Sodium citrate bulk quantities are sold by the pallet and the truckload. Our minimum is one pallet 2,250 lbs — and a full truckload is 42,500 lbs. If your sodium citrate purchase is for a production line rather than a pilot batch, that is the range we quote in.
Captain Drake is a sodium citrate supplier, distributor and importer — not a producer. Sodium citrate manufacturers run the fermentation and neutralisation plants overseas; we carry US inventory, hold the documentation and handle the import. Buying direct from a producer means container-load minimums and 8–12 week ocean lead times. Buying from us means pallet quantities out of US stock with a lot-specific Certificate of Analysis on arrival.
What sodium citrate costs in bulk
Price moves with grade (FCC or USP), particle size, volume tier, pack format, and whether the material must be Non-GMO Project Verified. Verified non-GMO material carries a premium over commodity corn-derived material because it has to be imported. We quote landed and delivered to your plant, and return quotes within one business day.
| Tier | Quantity | Typical buyer |
|---|---|---|
| LTL — one pallet | 2,250 lbs | Pilot runs and contract manufacturers |
| Multi-pallet LTL | 2,250 – 20,000 lbs | Mid-size plants, seasonal production |
| Full truckload | 42,500 lbs | Continuous lines — lowest landed cost per pound |
| Annual contract | By agreement | Released JIT against a production schedule |
| Pack format | Unit weight | Typical application |
|---|---|---|
| 50 lb multi-wall paper bag | 50 lbs | Standard plant intake, manual charging |
| 25 kg bag | 55 lbs | Metric specification programs |
| 2,250 lb tote sack (FIBC) | 2,250 lbs | High-volume continuous lines |
| Poly-lined 50 lb box | 50 lbs | Fine granular, moisture protection |
Function
Sodium Citrate Uses in Food Manufacturing
There are four main uses for sodium citrate in food, and which one you need decides the grade and particle size your specification should call for. Sodium citrate in food is almost always doing one of these jobs:
1. Buffering and pH control
It holds pH steady as a formulation shifts. Paired with citric acid it forms a citrate buffer system — the most widely used buffer in food and beverage manufacturing, because both halves are already approved, cheap and flavour-neutral at working concentrations.
2. Emulsification in dairy systems
In processed cheese and cultured dairy, it sequesters calcium from casein, which lets protein and fat stay in a stable emulsion instead of separating under heat. This is why it appears on almost every processed-cheese ingredient list.
3. Sequestration and metal chelation
It binds trace metal ions that catalyse oxidation and cause off-flavours, colour drift and rancidity. In beverages and oils that translates directly into shelf life.
4. Sodium delivery without saltiness
It contributes sodium in electrolyte, sports-nutrition and clinical-nutrition formats without the sharp saline note that sodium chloride brings.
Primary industries: beverage and functional drinks, processed and cultured dairy, nutraceuticals and clinical nutrition, prepared foods and sauces, pet food, and pharmaceutical formulation.
Straight Answer
Is Sodium Citrate Natural? Safety and Sourcing
It is made by neutralising citric acid with a sodium source. Since the citric acid itself comes from fermenting sugar, the citrate is a fermentation-derived ingredient rather than a petrochemical one — which is what most people are actually asking when they ask whether it is natural. Whether it can be labelled natural depends on your jurisdiction and your own labelling counsel, not on us.
On sodium citrate safety: it is Generally Recognized as Safe under FDA regulation and is an approved food additive across major markets under E331. It has no ADI limit specified by JECFA, which is the regulatory way of saying no numerical intake ceiling was considered necessary. Our material is supplied to FCC or USP specification with a lot-specific Certificate of Analysis.
The claim that matters commercially is the non-GMO one, and that comes down to feedstock — which is the next section.
Sourcing Reality
Why Non-GMO Sodium Citrate Has to Be Imported
It is made from citric acid, so its non-GMO status is inherited from the acid it started as. That is the whole story.
All three citric acid producers operating in the United States — Cargill, ADM and Primient — ferment corn, and the overwhelming majority of US corn is genetically modified. Citrate made from that acid cannot carry Non-GMO Project verification, no matter who neutralises it or where.
Ours traces back to citric acid fermented from non-GMO cane sugar and non-GMO tapioca starch in Thailand and Colombia. We then hold US inventory across 12 warehouses, so your plant gets domestic lead times on material that can only originate overseas.
Qualification Pack
Sodium Citrate SDS, Specification and Certificate of Analysis
Supplier approval stalls on missing paperwork more often than on price. The current SDS, the product specification and a lot-specific Certificate of Analysis are available on request, and the full pack ships with every order. If your QA system still asks for an MSDS, the SDS we send is the current GHS-format equivalent.
- Safety Data Sheet (SDS / MSDS)
- Certificate of Analysis, lot-specific
- Country of origin declaration
- Kosher and Halal certificates
- Product specification sheet
- Allergen statement
- Non-GMO Project verification certificate
- ISO 9001 / 14001 / 22000 certificates
Buyer Questions
Frequently Asked Questions
What is sodium citrate dihydrate?
What is the chemical formula for sodium citrate?
Trisodium citrate vs sodium citrate what is the difference?
Is sodium citrate natural?
Is sodium citrate safe?
Where can I buy trisodium citrate in bulk?
What is sodium citrate used for in food manufacturing?
Are you a sodium citrate manufacturer or a distributor?
Is your citrate Non-GMO Project Verified?
Do you participate in annual RFQ programs?
Yes. Most customers contract annually, with RFQs issued in September and October for the following calendar year. Send your products, annual volumes, grades and documentation requirements and we will return a complete RFQ response.
Related Ingredients
ORGANIC · NON-GMO
Organic Cane Sugar
The sodium equivalent — same functions, lower cost, where sodium load is not a constraint.
CAS 77-92-9 · E330
Citric Acid Anhydrous
The same feedstock question, the same answer. Commonly paired in beverage systems.
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