If you plan to buy citric acid monohydrate in bulk, I recommend evaluating five factors before requesting a quotation: grade, specification, intended application, documentation, and delivered cost. Citric acid monohydrate is a crystalline form of citric acid containing one molecule of water of crystallization, with the molecular formula C6H8O7·H2O and a molecular weight of approximately 210.14 g/mol. Your best supplier is not necessarily the one offering the lowest unit price; it is the supplier that can consistently match your required quality, packaging, lead time, and compliance documentation.
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In this guide, I explain how B2B buyers can compare citric acid monohydrate suppliers, select a suitable grade, estimate sourcing requirements, and reduce avoidable purchasing risks. I also outline how Songyi can support specification review and quotation discussions for industrial and commercial procurement.
This guide is intended for importers, distributors, formulation companies, food and beverage manufacturers, personal care producers, pharmaceutical raw-material buyers, and industrial chemical users. It is also useful for purchasing teams that are comparing suppliers from different countries or evaluating a new source for an existing citric acid formulation.
Each buyer may require a different product profile. For example, a beverage manufacturer may focus on food-grade compliance, dissolution behavior, sensory impact, and supply continuity, while an industrial user may prioritize cost, particle size, packaging, and process performance. I recommend defining the end use before asking suppliers to quote, because “citric acid monohydrate” alone may not fully describe the quality required.
Citric acid monohydrate is the monohydrated crystalline form of citric acid. PubChem identifies citric acid monohydrate with the CAS Registry Number 5949-29-1, while anhydrous citric acid is commonly associated with CAS 77-92-9. The monohydrate has a nominal molecular weight of 210.14 g/mol, compared with approximately 192.12 g/mol for anhydrous citric acid.
The material is widely used because citric acid can provide acidity, pH adjustment, chelation, and flavor functionality in suitable formulations. Its exact performance depends on concentration, formulation design, water quality, temperature, particle characteristics, and the applicable grade specification. For regulatory classification and permitted use, I recommend checking the destination-market requirements rather than relying only on a supplier’s general product description.
For food applications, citric acid is commonly identified as food additive E330 in European regulatory materials. The U.S. Food and Drug Administration also lists citric acid in its food-substance regulations, including 21 CFR §184.1033. These references support the importance of reviewing the applicable regulation, but they do not automatically mean that every product or shipment is approved for every use.
Food-grade citric acid monohydrate may be used as an acidulant, acidity regulator, flavor component, or processing aid where permitted by the relevant regulations. Common application areas include powdered drinks, confectionery, sauces, prepared foods, and nutritional products. I recommend confirming both the target market and the permitted use level with your regulatory or product-development team.
Pharmaceutical or compendial applications require more than a generic food-grade statement. Buyers may need compliance with a specific pharmacopoeia, controlled impurity limits, traceability requirements, and documentation for the intended dosage form. A supplier should review the required standard before quoting, because a material suitable for food production may not satisfy a pharmaceutical specification.
Citric acid monohydrate can be considered in selected personal care, cleaning, and household formulations for acidity adjustment, chelation, or effervescent systems. The appropriate grade depends on the finished product, local regulations, formulation compatibility, and packaging environment. I would also evaluate dust control, dissolution, storage stability, and the interaction between the acid and other ingredients.
| Buying Dimension | What to Confirm | Why It Matters |
|---|---|---|
| Product form | Monohydrate versus anhydrous | Water content affects molecular weight, formulation calculations, and handling. |
| Application grade | Food, pharmaceutical, cosmetic, technical, or other required grade | Different uses can require different specifications and compliance documents. |
| Assay | Supplier specification and test method | Assay confirms conformity with the agreed quality range. |
| Moisture or loss on drying | Limit and analytical method | Moisture may influence formulation weight, caking, and storage behavior. |
| Particle characteristics | Powder, granule, mesh, or particle-size distribution | Particle form affects flow, dust, dissolution, and process efficiency. |
| Packaging | Bag material, liner, net weight, palletization, and labeling | Packaging affects protection, handling, warehousing, and import compliance. |
Many bulk suppliers offer standard packaging such as 25 kg bags, but packaging is not universal and should be confirmed in the quotation. Larger formats, pallet configurations, private labels, or customized marks may be possible depending on order volume and production arrangements. I advise buyers to specify the required net weight, inner liner, outer bag, pallet condition, and label language before comparing offers.
Start with the finished-product application, target market, expected annual volume, and required delivery location. State whether the material will be used in food, pharmaceutical, cosmetic, cleaning, industrial, or another formulation. This information allows the supplier to identify the correct grade and avoid an unsuitable low-cost alternative.
Your specification should include product name, CAS number where relevant, grade, assay requirement, moisture or loss-on-drying limit, appearance, particle size, impurity limits, packaging, shelf-life expectations, and required documents. If you already have an approved standard, send it to the supplier for line-by-line confirmation. A written specification reduces misunderstandings between the buyer, manufacturer, laboratory, freight provider, and customs broker.
At a minimum, I recommend requesting a product specification sheet, safety data sheet, certificate of analysis, batch or lot identification, country of origin, and packaging details. Depending on the application, you may also need allergen information, GMO statements, residual-solvent information, heavy-metal limits, regulatory declarations, or a statement against prohibited substances. The exact document list should be based on your destination country and finished-product obligations.
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A sample evaluation can confirm appearance, dissolution behavior, odor, particle handling, and compatibility with your formulation. Laboratory results should be compared with the agreed specification rather than judged only by visual appearance. For a new source, I recommend approving a defined batch or lot and retaining reference samples according to your internal quality procedure.
Compare price per kilogram, minimum order quantity, payment terms, packaging, inland transport, export handling, freight, insurance, duties, taxes, and destination charges. A quotation that appears cheaper at origin may have a higher landed cost after freight or special documentation is added. Ask suppliers to state the quotation validity period because raw-material and freight costs can change before order confirmation.
Quality evaluation should cover both the written specification and the supplier’s batch-control process. Ask how the supplier identifies lots, issues certificates of analysis, manages deviations, and handles complaints. I cannot recommend accepting a supplier solely because a single sample meets your requirements; repeatability and traceability are more important for long-term production.
Regulatory expectations differ by country and application. For example, the U.S. FDA’s 21 CFR §184.1033 provides a regulatory reference for citric acid in food use, while the European Commission’s food-additive framework identifies citric acid as E330. These sources should be treated as starting points for compliance review, not as a substitute for checking your exact product category, use level, labeling, and import requirements.
Ask whether the quoted material is in stock, made to order, or subject to a production schedule. Request an estimated production lead time, document-preparation time, and transit time separately, because these are different parts of the delivery cycle. I also recommend confirming the supplier’s ability to support repeat orders at your forecasted volume rather than focusing only on the first shipment.
MOQ, payment terms, packaging customization, sample policy, and shipment method can materially affect the suitability of a supplier. Some buyers need a trial quantity before committing to a container-scale order, while others need regular pallet or full-container deliveries. Songyi can discuss your target quantity, application, destination, and documentation requirements before preparing a sourcing proposal.
Citric acid monohydrate pricing is not fixed because it depends on grade, order quantity, origin, packaging, freight market conditions, exchange rates, and delivery terms. A reliable quotation should identify the commercial basis, such as EXW, FOB, CFR, or CIF, and should state whether export documents and local charges are included. I recommend asking for both the unit price and the estimated total shipment value so that your purchasing team can compare offers consistently.
MOQ also varies by supplier, packaging format, production plan, and destination. A small trial order may have a higher unit cost, while a larger order may improve freight efficiency but increase inventory exposure. Before placing a bulk order, calculate your monthly consumption, safety stock, shelf-life requirement, warehouse capacity, and cash-flow impact.
Transport planning should consider moisture protection, palletization, container loading, labeling, customs classification, and destination-country requirements. The material should remain in packaging that protects it from contamination and unsuitable storage conditions, but the exact storage and transport instructions should come from the supplier’s SDS and technical documentation. I recommend involving your freight forwarder and customs broker before shipment, particularly for new trade lanes.
These mistakes can increase the risk of reformulation, customs delays, production interruptions, or unexpected landed costs. I recommend using a supplier questionnaire and a pre-shipment checklist for every new source. If your purchase is strategic, involve quality, regulatory, logistics, finance, and production teams before final approval.
At Songyi, I approach bulk citric acid monohydrate sourcing by first clarifying the application, grade, destination, quantity, packaging, and documentation requirements. I can use this information to help structure a quotation request rather than sending a generic product offer. Where a requirement is not yet defined, I recommend confirming it with your quality or regulatory team before purchase.
For an initial inquiry, please prepare the target product name, application, estimated quantity, preferred packaging, delivery port or country, required grade, and any specification or compliance documents you already use. I can then discuss available supply options, sample arrangements, commercial terms, and the information needed for technical evaluation. Final availability, price, MOQ, lead time, and documentation should be confirmed in the formal quotation.
To buy citric acid monohydrate in bulk successfully, begin with the application and required grade, then verify the chemical form, specification, documentation, packaging, and total landed cost. Do not select a supplier based on price alone, because an apparently low offer may not include the quality level, compliance documents, or delivery conditions your business needs. A written specification, representative sample, current batch documentation, and clear commercial terms provide a more reliable basis for approval.
As your next step, send Songyi your required grade, annual or trial quantity, destination, packaging preference, and application. I can help organize the purchasing requirements and identify which technical, regulatory, and logistics details should be confirmed before you place a bulk order.
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