Molekula
Disodium hydrogen citrate sesquihydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Disodium hydrogen citrate sesquihydrate is a buffering agent and chelating agent used in pharmaceuticals, food, and laboratory applications. It is a white, crystalline powder with a molecular formula of C6H6Na2O7•1.5H2O and a molecular weight of 263.11 g/mol. It is stable at ambient temperatures and has no signal word. Molekula supplies Disodium hydrogen citrate sesquihydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — $95.00 per pack
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1 kg — $142.30 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white powder |
| Identification | Conforms to reference |
| Assay | 99.0 - 101.5 % |
| Heavy Metals (Pb) | ≤0.001% |
| Arsenic (As) | ≤0.0003% |
| Average particle size | ≥99.5% PASS 80 to 120 mesh |
| Oxalate (Oxalic acid) | ≤0.4% |
| pH (3% aq. sol.) | 4.9 - 5.2 microbial limits |
| Total aerobic and yeasts | ≤3000cfu/g |
| E. Coli and Salmonella | Absent |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 10517053 |
| CAS Number | 6132-05-4 |
| IUPAC Name | tetrasodium;bis(3-carboxy-3-hydroxypentanedioate);trihydrate |
| Molecular Formula | C6H6Na2O7•1.5H2O |
| Molecular Weight | 263.11 |
| Exact Mass | 526.0135 |
| SMILES | C(C(=O)[O-])C(CC(=O)[O-])(C(=O)O)O.C(C(=O)[O-])C(CC(=O)[O-])(C(=O)O)O.O.O.O.[Na+].[Na+].[Na+].[Na+] |
| InChIKey | HGPVLOQNBSHYEI-UHFFFAOYSA-J |
| InChI | InChI=1S/2C6H8O7.4Na.3H2O/c2*7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;;;/h2*13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;;3*1H2/q;;4*+1;;;/p-4 |
| PubChem CID | 2724527 |
| REACH Code | Y113 |
| HTS Code | 29181550 |
| Tariff Code | 2918150090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, disodium salt, hydrate (2:3)
- 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, sodium salt, hydrate (2:4:3)
- Citric acid, disodium salt, sesquihydrate
- Disodium citrate sesquihydrate
- Disodium hydrogen citrate 1.5 H2O
- Sodium citrate dibasic sesquihydrate
- Sodium hydrogencitrate sesquihydrate
- Tetrasodium, 3-carboxy-3-hydroxypentanedioate, trihydrate
Frequently asked questions
What is disodium hydrogen citrate sesquihydrate commonly used for?
It is primarily used as a buffering agent in pharmaceuticals, food and beverage applications, and as a mild acidity regulator in cosmetics.
What is the chemical formula and molecular weight of disodium hydrogen citrate sesquihydrate?
The formula is **C₆H₆Na₂O₇•1.5H₂O**, and the molecular weight is **263.11 g/mol**.
How should disodium hydrogen citrate sesquihydrate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and strong oxidizing agents.
What grades or purity levels does Molekula supply for this product?
We supply **pharmaceutical-grade (USP/EP/JP)** and **food-grade (FDA-compliant)** disodium hydrogen citrate sesquihydrate.
Can Molekula supply disodium hydrogen citrate sesquihydrate in bulk quantities?
Yes, we offer bulk packaging options (e.g., 25kg drums, 500kg totes) for industrial and commercial customers.
What documentation is provided with an order of disodium hydrogen citrate sesquihydrate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.