Acidity Adjustment Sodium Acetate Anhydrous
CAS NO.: 127-09-3
Molecular Formula: CH3COONa
Molecular Weight: 82.03
Character: white crystal powder; specific gravity is 1.528 and melting point is 324℃.
Usage: It is a kind of chemical raw material and is widely used in dye, pharmaceutical, chemical reagent fields, sewagement and etc.
Package: 25kg plastic woven bag or 1000kg Ton-bag
Storage: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
- Product Description
Acidity Adjustment Sodium Acetate Anhydrous — Industrial pH Buffer for Dye, Pharma & Chemical Applications
Acidity Adjustment Sodium Acetate Anhydrous (CAS No. 127-09-3) is a high-purity, anhydrous buffering agent widely used across dye, pharmaceutical, chemical, and wastewater treatment industries. It has a purity of ≥98% and moisture content of ≤0.5%, and has a stable buffering range of pH 4.0-9.0, which provides accurate and reliable pH control for demanding industrial processes. A product from Shanxi Zhaoyi Chemical Co., Ltd. (Founded in 1988) 30+ years expertise in acetate production 150,000 tons/year capacity Perfect fit to B2B buyers’ needs at scale Consistent batch quality, flexible packaging, competitive price

Technical Specifications
Parameter | Food Grade Standard |
Content (CH₃COONa) | 99-101% |
Free Alkali | ≤0.2% |
Potassium (K) | ≤0.025% |
Lead (Pb) | ≤0.001% |
Arsenic (As) | ≤0.0003% |
Loss on Drying | ≤2% |
Molecular Formula | CH₃COONa |
Molecular Weight | 82.03 |
Specific Gravity | 1.528 |
Melting Point | 324℃ |
Appearance | White Crystal Powder |

What Is Acidity Adjustment Sodium Acetate Anhydrous and How Does It Work?
Sodium acetate anhydrous (CH₃COONa). White crystalline powder. Molecular weight 82.03. Specific gravity 1.528. Melting point 324°C. It is a weak alkaline salt that dissociates into acetate ions and sodium ions in an aqueous solution.
The dissociation makes it a very good buffer. When acid enters the system , acetate ions react with H + to create acetic acid , avoiding a pH decrease . When you add alkali , the acetic acid combines with the OH- to make acetate ions and water and thus prevents the pH rising .
This results in a stable, self-correcting pH system, making it an excellent sodium acetate anhydrous pH regulator for a broad variety of industrial and formulation conditions.
Key Product Characteristics
Controlled impurities, high purity. With ≥98% CH₃COONa and ≤0.03% chloride, you will get batch after batch of continuous, high precision pH adjustment. Impurity levels are tightly regulated in pharmaceutical and food grade applications making this level of purity very critical.
Anhydrous and low-moisture formulation. Moisture level is maintained at ≤0.5% without any crystalline precipitation. Hence this product is especially suited for water sensitive systems where excess moisture might affect formulation stability or reaction conditions.
Good flowability, non-caking. The powder is free flowing making it simple to weigh, dose and feed into automated systems. Less clump = better and more consistent weighing and dosing capabilities on the plant floor with less waste.
Gentle chemistry, safe handling. Sodium acetate anhydrous does not have the corrosive hazard of a strong acid or alkali. It can be safely handled under normal industrial settings, therefore lowering the risk to the operator and making regulatory compliance easier.

Application Areas
Dye and Textile Processing
It is used as a dyeing buffer for sodium acetate anhydrous which has an important function in the fabric dyeing and printing process to maintain a steady pH. Uniform pH eliminates inconsistent color saturation, bleeding and color fluctuation across batches, all of which directly influence product quality and customer satisfaction in textile production.
Food and Beverage Industry
It regulates acidity in food and beverage manufacture to preserve pH. Food-grade applicability (Kosher and Halal certifications for applicable grades) makes it acceptable to worldwide market corporations.
Medicines
Pharmaceutical manufacture requires precise pH control during synthesis, extraction, and formulation. Sodium acetate anhydrous is a stable, well-characterized buffering solution with a known impurity profile for API synthesis and dosage form processing.
Chemical Reactions and Buffer Preparation
In laboratory and industrial chemical processing, it is widely used to prepare acetate buffer solutions. Its predictable buffering performance across pH 4.0–9.0 makes it a standard reference material for pH calibration and reaction control.
Industrial Wastewater Treatment
In wastewater treatment, the pH should be maintained at an acceptable range for effective chemical precipitation and biological treatment processes . Anhydrous sodium acetate provides a controlled and consistent buffering activity which helps to optimise the effectiveness of treatment without overcorrection.
Acidity Adjustment Sodium Acetate Anhydrous vs Other Products
Feature | Our Sodium Acetate Anhydrous | Sodium Acetate Trihydrate | Sodium Bicarbonate | Citric Acid/Citrates |
Purity | 99-101% | 58-60% (anhydrous basis) | 99%+ | 99%+ |
Moisture Content | ≤2% | ~39% (crystal water) | Low | Variable |
pH Buffering Range | 4.0-9.0 | 4.0-9.0 | 8.0-9.0 | 3.0-6.0 |
Storage Stability | Excellent (non-hygroscopic) | Moderate (can effloresce) | Good | Good |
Dosage Efficiency | High (no water weight) | Lower (water dilution) | Moderate | Moderate |
Application Temperature | Up to 324℃ | Up to 58℃ (melts) | Decomposes >50℃ | Up to 175℃ |
Cost Effectiveness | Higher initial, better value | Lower cost, less efficient | Low cost, narrow range | Moderate cost |
Quality Control & Standards
Every batch of Acidity Adjustment Sodium Acetate Anhydrous is produced under strict quality management protocols and tested against defined acceptance criteria before release. The quality standards include:
- Content ≥98%, free acid ≤0.03%, water-insoluble substances ≤0.04%
- Chloride ≤0.03%, Iron ≤0.006%, heavy metals (as Pb) ≤0.001%
- 5% aqueous solution pH: 7.5–9.0
- Moisture ≤0.5%, no crystalline precipitation
Third-party testing is supported for customers who require independent verification. This is particularly relevant for buyers in regulated industries such as food, pharmaceuticals, and export-oriented manufacturing.
Certifications & Compliance
Shanxi Zhaoyi Chemical maintains a full set of management system and product certifications to support your procurement compliance requirements:
- ISO 9001 — Quality Management System
- ISO 14001 — Environmental Management System
- ISO 45001 — Occupational Health and Safety Management System
- Kosher Certification — For applicable food-grade products
- Halal Certification — For applicable food-grade products
On-site factory audits by domestic and international customers are welcomed and supported. Multilingual MSDS, COA, and conformity documentation are available upon request.

Packaging & Storage
Packaging options:
- 25 kg plastic woven bags
- 1,000 kg ton bags
Storage guidelines: Store in a dry, well-ventilated warehouse away from heat and moisture. Handle with care during transport to prevent packaging damage. Store separately from toxic substances.

B2B Supply & Purchasing Advantages
If you are evaluating anhydrous sodium acetate price and supply reliability together, here is what sets Shanxi Zhaoyi apart:
- Annual production capacity: 150,000 tons across a 27,000 m² facility
- Standard lead time: 5–7 working days; stock orders can ship within 24 hours
- Sample support: Free samples from 500 g to 25 kg for trial testing
- After-sales: Quality complaints responded to within 3 working days; returns and exchanges accepted for quality defects
- Trade terms: FOB, CIF, DAP supported with flexible payment arrangements
- 24/7 technical consultation available throughout your purchasing and application process
Large-scale production combined with optimized processes means competitive pricing without sacrificing quality — a key advantage for buyers placing regular or bulk orders.
FAQ
Q: What is the pH adjustment range of sodium acetate anhydrous?
A: It maintains effective buffering across a pH range of 4.0–9.0. A 5% aqueous solution produces a pH of 7.5–9.0, making it suitable for a wide range of industrial and formulation applications.
Q: How does sodium acetate anhydrous regulate pH in industrial systems?
A: As a weak alkaline salt, it releases acetate ions in solution. These ions neutralize excess H⁺ when acidity increases, and excess OH⁻ is absorbed through acetic acid regeneration when alkalinity rises — creating a stable, self-correcting pH buffer.
Q: Is this product suitable for use as a sodium acetate anhydrous dyeing buffer?
A: Yeah. It is used in dyeing and printing of textiles to ensure the consistency of bath pH which directly effects the uniformity of colour and fabric quality. Its great purity and strong buffering makes it a popular choice in dyeing operations.
Q: What purity and impurity specs should I look for before buying?
A: Important parameters to look for are: CH₃COONa ≥98%, moisture ≤0.5%, chloride ≤0.03%, iron ≤0.006%, heavy metals (like Pb) ≤0.001%, free acid ≤0.03%. Third party test results available upon request.
Q: Can we acquire samples before we place bulk order?
A: Yes. And we may provide free samples from 500 g to 25 kg so you can confirm performance in your unique application prior to a complete purchase.
Q: What are the packing alternatives and what are the storage requirements?
A: The product is packaged in 25 kg plastic woven bags, 1,000 kg tonne bags. Keep in a cool, dry, well-ventilated environment away from heat and moisture and harmful substances.

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Contact Us
Have a sourcing question or need a quote for Acidity Adjustment Sodium Acetate Anhydrous? Reach out to our team at sxzy@sxzhaoyi.com — we respond within 2 hours on business days.
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