acetic acid sodium salt trihydrate
CAS NO.: 6131-90-4
Molecular Formula: CH₃COONa·3H₂O
Molecular Weight: 136.08
Character: Colorless or white transparent crystals. It is readily soluble in water and slightly soluble in alcohol. It has hygroscopic properties, a specific gravity of approximately 1.45, and a melting point of approximately 58°C.
Usage: It is widely used as a buffering agent, pH regulator, textile dyeing auxiliary, electroplating additive, concrete additive, pharmaceutical intermediate, laboratory reagent, and wastewater treatment chemical.
Package: 25 kg plastic woven bag with inner polyethylene liner or 1000 kg ton bag.
Storage: It should be stored in a dry and well-ventilated warehouse. Keep away from heat, moisture, strong oxidizing agents, and poisonous substances. Handle carefully during transportation to prevent package damage.
- Product Description
High-Purity Acetic Acid Sodium Salt Trihydrate – Professional Grade Buffering & pH Regulation Solutions
Shanxi Zhaoyi Chemical Co., Ltd. started up in 1988. Acetate chemicals are our line of work. One production base does the job, spread across 27,000 ㎡ on a single planned layout. Yearly output sits at 150,000 tons. From those lines, Acetic Acid Sodium Salt Trihydrate goes out to industrial and laboratory buyers around the world. The white crystal weighs 136.08 g/mol per molecule. Specific gravity comes in at 1.45, and the melting point stays at 58°C. Its CAS number is 6131-90-4. The plant holds ISO certification. KOSHER and HALAL approvals are in place as well. Purity follows strict pharmaceutical-grade rules. Water dissolves it, and it holds pH steady where accuracy matters. Wastewater treatment systems rely on it. Industrial processing plants use it too. Labs use it for analysis. Every one of those jobs gets good results.
Key Features & Benefits
Our this product carries a hygroscopic crystal structure that keeps its shape. In water-based solutions it dissolves fast and evenly, so pH stays steady. Safer to handle than anhydrous sodium acetate products. Operator risk is lower as well. Chemical stability holds up over the long term too.
Refined production methods plus multi-stage purification push heavy metal levels down very low. Moisture content stays inside a tight range. Every batch gets strict quality testing. Same results every time, batch after batch, is what that gives us. High-precision formulation work depends on steady batches. Take electroplating electrolyte configuration or textile dyeing manufacturing.
Water breaks this substance down completely. Very little of it dissolves in alcohol. So how it behaves depends on the liquid around it. Two uses come out of that. One is building intermediates for pharmaceuticals. The other is making admixtures for concrete. The crystals form the same shape every time. Dissolving also happens at a steady rate. Output then goes up, and batching takes less work.
Technical Specifications
Parameter | Specification |
|---|---|
CAS Number | 6131-90-4 |
Molecular Formula | CH₃COONa·3H₂O |
Molecular Weight | 136.08 g/mol |
Appearance | Colorless/white transparent crystals |
Specific Gravity | Approx. 1.45 |
Melting Point | Approx. 58°C |
Water Solubility | Readily soluble |
Alcohol Solubility | Slightly soluble |
Hygroscopic Property | Yes |
How It Works
Acetic Acid Sodium Salt Trihydrate works by buffering acetate ions. Inside an aqueous system, acidity and alkalinity stay where they belong. Once it dissolves all the way, it splits into stable sodium ions and active acetate anions. Through long production runs and lab work, pH stays put thanks to those ions. Leftover acid or alkali in the solution gets cancelled out too.
That buffering action does not fade out quickly. So the dye bath holds the right pH range for the entire textile dyeing run. Dye lands on the fabric evenly, and the finishing quality stays solid. Heat rises, reagents get added, and pH could swing. Color shift and patchy dyeing never happen.
Acetate ions get released during wastewater treatment. Denitrifying bacteria feed on them as a carbon source. The microbes use up every bit of that acetate. Nitrogen pollutants then leave along with the water. Companies can still meet their environmental discharge limits this way.
Applications
Laboratory & Analytical Chemistry: Labs count on it to prepare standard buffer solutions for biochemical tests. Setting up the mobile phase in chromatography is another job it takes care of. As a reagent for pH calibration, it works well. Test data stays accurate and repeatable because of that.
Electroplating Industry: Inside plating baths for nickel, chromium and zinc, the electrolyte pH holds steady. Acid and base levels stay put, so metal deposits at an even speed. A smooth surface is what the workpiece ends up with. Plating yield goes up because of this, and product quality goes up as well.
Textile Processing: Dyeing and finishing fabric is one area where it comes in handy. There it acts as a leveling agent for dyes. The dye stays in solution. Color spreads out evenly. Deep into the fibers it goes. Both the dye result and the color fastness turn out far better.
Concrete Technology: In concrete, this additive acts as a setting accelerator. It gives the mix a boost in performance too. Curing needs less time. Site work becomes easier for the crew. Compressive strength in the finished structures does not fall off.
Pharmaceutical Manufacturing: It works as a synthetic intermediate for active ingredients, so it gets used widely. Controlled-release tablets also depend on it as a functional excipient. Formulators then get raw material support that is stable and safe.
Acetic Acid Sodium Salt Trihydrate vs Other Products
Feature | Our Trihydrate Grade | Anhydrous Sodium Acetate | Liquid Acetate Solutions |
|---|---|---|---|
Purity Control | ≥99.0% crystalline | Variable moisture pickup | Concentration drift |
Handling Safety | Non-dusting crystals | Fine powder hazard | Spillage risk |
Storage Stability | 24 months sealed | Hygroscopic degradation | 6-12 months |
Dosing Precision | Exact weighing | Moisture correction needed | Density verification required |
Application Range | Universal compatibility | Limited aqueous use | Pre-diluted only |
Certifications & Compliance
Our production base holds ISO 9001 quality management system certification. Every production link follows standard control. At each step, the process gets tight supervision. Valid KOSHER and HALAL certifications are available too. They satisfy the compliant production requirements for food contact and pharmaceutical industry scenarios.
A third-party authority tests every batch of products. Heavy metal content and core purity indicators get strict inspection. So each lot fully complies with international chemical safety standards. Complete, official Certificate of Analysis (CoA) documents come with every shipment. Customer quality verification and supply chain filing are supported by those documents.
Packaging Options
Standard Industrial Package: 25kg woven outer bags, with polyethylene liners placed inside. Moisture from outside cannot get in while the goods are transported or stored sealed, since the double-layer build blocks it. Crystal integrity and steady product performance stay fully protected.
Bulk Supply: Big industrial orders leave our plant in 1000kg FIBC ton bags. Handling gets easier this way, and packaging costs come down. Secondary pollution stays out of the process too. On automated lines, these bags can feed the equipment directly.
We also support personalized customized packaging solutions. According to customers' special production scenarios and batch size requirements, we can configure small-specification packaging and special container materials to meet diversified procurement demands.
Manufacturing Process
Our plant runs a closed-loop process that has proven itself over time. High-purity sodium hydroxide and acetic acid meet in a neutralization reaction that is tightly controlled. Temperature and pressure stay fixed. That way, the reaction goes all the way to the end. Then gradient controlled crystallization takes over. It yields trihydrate crystals. Those crystals are even and stable.
Cleaning is done by multi-stage centrifugal separation. Mother liquor and the tiny impurities left behind get pulled out. The product then meets high-standard pharmaceutical and industrial grade specifications. At each purification stage, impurity content stays under tight control. High-purity product quality depends on that.
Finished crystals move into a drying chamber that keeps humidity constant. Drying them there holds the trihydrate molecular structure together. Dehydration and moisture pickup cannot happen that way. Screening runs on automated equipment. Batch after batch, particle size spread comes out even and fluidity stays steady. So performance in use never shifts.
Why Choose Us
With 36 years of professional acetate manufacturing experience, we have in-depth technical accumulation and mature production technology in the industry. A stable annual output of 150,000 tons and sufficient year-round inventory of acetic acid sodium salt trihydrate effectively resist market supply fluctuations and ensure continuous and stable product supply for global customers.
Our professional technical team has rich practical experience in water treatment, metal processing, pharmaceutical synthesis and other fields. We can provide targeted formula optimization guidance and on-site problem-solving support according to customers' process requirements.
From Europe to America to Asia, our distribution and logistics network covers the globe. Cross-border delivery stays fast and safe. The customer's actual needs come first. We seek out partners who stay with us for the long run. In the market, steady quality and quick after-sales service earn us recognition.
FAQ
Q: What is the difference between trihydrate sodium acetate and the anhydrous form?
A: A1: Inside trihydrate sodium acetate, water molecules stay locked in place. There, they hold steady. Its crystals give off no dust. Safer handling is the result. Dissolving speed is something you can tune too. Anhydrous sodium acetate behaves in reverse. Moisture gets absorbed by it with ease. Damp air degrades it, so storage has to stay strictly moisture-proof.
Q: Can you use this product in food-grade production?
A: A2: The chemical purity of this standard grade is high. Formal food contact use still calls for food-grade certification documents. Our team can make food-grade products that follow the rules. Matching certificates can come from us as well. Reach out to us.
Q: Why does the product form clumps in storage, and how can you stop that?
A: A3: If the product sits in damp air too long, it pulls in moisture. Clumps form after that. Sealed packaging takes care of the problem. Store the bags in a dry warehouse, below 25°C. The crystal stays loose that way. Performance holds steady too.
Q: What does it take to switch an anhydrous sodium acetate dose over to the trihydrate grade?
A: A4: The trihydrate crystals hold bound water inside them. So you multiply the anhydrous sodium acetate dose by 1.66 to make up for it. Your dose then lands where it should, and it holds steady.
Q: If the packaging stays sealed, how long can the product be kept?
A: A5: Store it dry. Seal it the usual way. Our trihydrate sodium acetate then keeps complete indicator compliance. Performance stays steady for up to 24 months.
Request a Quote
Contact our acetic acid sodium salt trihydrate technical sales team at sxzy@sxzhaoyi.com for pricing, specifications, and application support today.
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