Analytical Grade Sodium Acetate Trihydrate
CAS NO.: 6131-90-4
Molecular Formula: CH₃COONa·3H₂O
Molecular Weight: 136.08 g/mol
Character: Colorless transparent crystals or white crystalline powder with stable purity and excellent water solubility. It is hygroscopic and may lose crystallization water in dry air.
Grade: Analytical Grade
Usage: Mainly used in analytical testing, standard and buffer solution preparation, pH control, chemical synthesis, biochemical research, chromatography, titration, and laboratory quality control.
Package: 500 g, 1 kg, 5 kg, 25 kg, or customized analytical-grade packaging.
Storage: Store in a tightly closed original container in a clean, dry, and well-ventilated location. Avoid moisture, heat, contamination, acids, and oxidizing agents.
- Product Description
Analytical Grade Sodium Acetate Trihydrate – Premium Laboratory Chemical Solution for Precise Testing & Analysis
Acetates have come out of SHANXI ZHAOYI CHEMICAL CO., LTD since 1988. That means over 35 years doing this work. Our output stays at 150,000 tons per year. A single standard production system runs the plant. So we know how to supply lab chemicals that hit strict specs. Purity for our Analytical Grade Sodium Acetate Trihydrate (CAS 6131-90-4) lands at 99–100%. Impurity markers stay very low. Production sticks strictly to the testing rules labs follow around the world. You get the reagent as a colorless crystal. Labs and research groups in many countries count on it for buffer solution preparation. They also use it for exact analytical testing and other tough lab tasks. Why? It mixes into water easily. Its chemical behavior also holds steady.

Key Features & Benefits
Stable batch-to-batch accuracy: We use an ultra-pure refined formula for our Analytical Grade Sodium Acetate Trihydrate. Quality stays the same from one production batch to the next. That stops experimental data drift. Precision lab work then gets results that can be trusted and repeated.
Fast dissolution and steady buffer performance: This crystal dissolves in water, so it mixes into solution fast. You spend less time making up a solution. Stored the usual way, the hygroscopic crystal structure holds steady and keeps its quality. Buffer systems get pH control that comes out accurate and repeatable.
Very low impurity interference: Tight control keeps trace impurities down. Iron sits at ≤0.0003% and arsenic at ≤0.0001%. Levels this low keep interference away from sensitive analytical work. As pharmaceutical grade material, it meets the strict demands of precision testing and lab quality control procedures.

Technical Specifications
Parameter | Specification |
|---|---|
CAS Number | 6131-90-4 |
Molecular Formula | CH₃COONa·3H₂O |
Molecular Weight | 136.08 g/mol |
Purity (CH₃COONa·3H₂O) | 99-100% |
Appearance | Colorless transparent crystals / white crystalline powder |
Chloride (Cl) | ≤0.005% |
Iron (Fe) | ≤0.0003% |
Heavy Metals (as Pb) | ≤0.0005% |
Arsenic (As) | ≤0.0001% |
Potassium (K) | ≤0.01% |
Free Alkali | ≤0.12% |
Water Solubility | Excellent (freely soluble) |

How It Works
Analytical Grade Sodium Acetate Trihydrate gives expert buffering performance through a steady acetate-acetic acid balancing mechanism. Once it dissolves fully in aqueous solution, it splits into sodium and acetate ions.
The solution's excess acid and alkaline components can be neutralized by the free acetate ions, preventing abrupt pH swings and preserving a steady pH range of 3.6 to 5.6. Because of this feature, it is essential for creating common buffer solutions.
In chromatographic analytical settings, it works as a dependable mobile phase component and eluent modifier. Its ultrahigh purity and ultra-low impurities keep the chromatographic column free of contamination. That means a steady baseline and precise separation findings all through the testing process.
Applications
Biochemical Research: You can use it when you mix buffer solutions for pH calibration. It also helps when you set up enzyme reaction tests. The pH stays steady. That is what biochemical testing needs.
Chromatographic Analysis: People use it often to prepare mobile phases for HPLC and ion chromatography. Metal impurities stay at ultra-low levels. So they do not block the detection system. The analytical data then comes out accurate.
Laboratory Testing: Useful for titration calibration standards and precipitation reaction experiments. It also supports daily precision testing in molecular biology laboratories.
Industrial Quality Control: Trusted by pharmaceutical QC laboratories for drug stability testing and food testing institutions for routine quality verification work.
Analytical Grade Sodium Acetate Trihydrate vs Other Products
Feature | Our Analytical Grade | Industrial Grade | Reagent Grade |
|---|---|---|---|
Purity | 99-100% | 58-60% | 98-99% |
Heavy Metals (Pb) | ≤0.0005% | ≤0.005% | ≤0.001% |
Chloride Content | ≤0.005% | ≤0.05% | ≤0.01% |
Iron Content | ≤0.0003% | ≤0.002% | ≤0.0005% |
Application Suitability | Precision analysis | General industrial | Standard lab use |
Batch Consistency | Pharmaceutical-grade control | Variable | Good |
Certifications & Compliance
Complete Quality Certification: Our production base is certified with ISO quality management system, ensuring standardized and consistent production of every batch of products.
Global Compliance Credentials: KOSHER and HALAL certificates come with the product. Labs and industrial sites with special needs can meet their compliance rules this way.
Strict Production Standards: Every step of production follows the GB2760 rules for food additives. It also meets the guidelines used for pharmaceutical-grade manufacturing.
Third-Party Authoritative Testing: SGS and Intertek run their own tests and checks on each product. Quality stays steady and dependable that way.

Packaging Options
We provide diversified graded packaging solutions to match different laboratory usage volumes and scenarios, with full moisture-proof sealing and complete batch information labeling:
- 500g bottles: Perfect for sample experiments and small-scale laboratory tests
- 1 kg containers: Ideal for regular analytical testing in labs on a daily basis
- 5 kg buckets are ideal for continuous usage in medium- and high-volume laboratories.
- 25 kg drums: An affordable option for large-scale institutional procurement and industrial research
- Personalized analytical-grade packaging can be customized in accordance with customer requests.

Manufacturing Process
Relying on our 27,000 ㎡ standardized production plant and 30 years+ mature purification technology, we strictly control the whole Analytical Grade Sodium Acetate Trihydrate production flow:
Raw Material Purification: Raw materials get chosen first, then they go through multi-stage crystallization. This brings them up to pharmaceutical-grade purity standards.
Precision Production Control: Our automated lines hold the crystallization settings steady. Particle size comes out even. The hydration state of the finished goods also stays stable.
Full-Process Quality Inspection: Multiple quality inspection points are set up in production to monitor impurity indicators in real time.
Finished Product Testing: Before delivery, all products undergo strict testing such as ICP-MS trace metal detection and ion chromatography anion analysis, and are packaged in dust-free and moisture-proof environments after passing all tests.
Why Choose Us
- Decades of Professional Experience: Acetate is all we have made for 35 years. Those years turned into hands-on know-how for each application. They also turned into product quality you can count on.
- Stable Supply Capacity: 150,000 tons leave our plant each year. Stock stays steady at that volume. Batch orders get filled, and long-term lab research gets what it needs.
- High Standard Quality Control: Every product is made under pharmaceutical-grade management rules. A full traceability system runs through the whole production process as well.
- Global Service Network: Cross-border shipping is something we sorted out a long time ago. Europe, America, Asia, and other regions are all covered. Goods get there when they should. Customs paperwork is filled in properly.
- Strong After-Sales Support: No two buyers want the same thing. We try to match what each of them asks for. Need technical help? It arrives fast. We tell you how to apply the product, and packing gets done your way.

FAQ
Q: How long can the product be used before it expires?
A: A1: Keep the container sealed. Put it somewhere cool and dry. Damp and heat will hurt it. Stored that way, the product holds its full spec performance for 36 months.
Q: Do you hand out official COA documents?
A: A2: Yes. Every batch ships with a full Certificate of Analysis. Each test indicator is covered in it, plus the production batch details. Use it for inspection or for your filing.
Q: Can this reagent be used for HPLC analysis?
A: A3: Yes. Trace impurities stay ultra low. So there is no baseline interference, and the column does not get contaminated. HPLC chromatographic testing requirements are fully met.
Q: What is your minimum order quantity?
A: A4: Order sizes are flexible. A client can take one small bottle for lab testing. Bulk industrial orders work too. That covers what different clients need.
Q: Do you provide free product samples?
A: A5: Yes. We can send test samples. Clients check product performance and applicability with them before buying in bulk.

Request a Quote
Please contact our professional technical sales team via Analytical Grade Sodium Acetate Trihydrate at sxzy@sxzhaoyi.com.


