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Sodium Carboxymethyl Cellulose Use

 

Carboxymethylcellulose (CMC) is a nontoxic and tasteless white flocculent powder with stable performance and is easy to dissolve in water. Sodium carboxymethylcellulose (CMC), commonly known as "industrial monosodium glutamate", is the most widely used and convenient product among cellulose ethers.
CMC dapat digunakan sebagai pengikat, pengental, zat pensuspensi, pengemulsi, pendispersi, penstabil, zat pengatur ukuran, dll.

Karboksimetil selulosa (CMC) adalah selulosa eter anionik, penampakannya berupa bubuk serat flokulan putih atau agak kuning atau bubuk putih, tidak berbau, tidak berasa, tidak beracun; Mudah larut dalam air, membentuk larutan transparan dengan kekentalan tertentu. Larutannya netral atau sedikit basa, tidak larut dalam etanol, eter, isopropil alkohol, aseton dan pelarut organik lainnya, tetapi larut dalam larutan etanol atau aseton dengan kadar air 60%. Ia bersifat higroskopis, stabil terhadap cahaya dan panas, dan viskositasnya menurun seiring dengan kenaikan suhu.

Carboxymethyl cellulose (CMC) Features:

1. Hampir tidak berbau, tidak berbau, dan higroskopis.
2. Mudah terdispersi dalam air menjadi larutan koloid transparan, tidak larut dalam pelarut organik seperti etanol.
3. PH larutan berair 3,1% adalah 6,5-8,5. Ketika pH>10 atau<5, viskositas perekat menurun secara signifikan, dan kinerja terbaiknya adalah pada pH=7.
4. Stabil secara termal, dengan peningkatan viskositas yang cepat di bawah 20 ℃ dan perubahan yang lebih lambat pada 45 ℃. Pemanasan berkepanjangan di atas 80 ℃ dapat menyebabkan denaturasi koloid sekaligus mengurangi viskositas dan kinerja secara signifikan.
5. Mudah larut dalam air, larutan transparan;

 

Grade of Carboxymethyl cellulose (CMC)

CMC Kelas Makanan
CMC Kelas Deterjen
CMC Kelas Pengeboran Minyak
CMC Kelas Keramik
CMC Kelas Cat
CMC Kelas Tekstil dan Pencelupan

 

How Sodium Carboxymethyl Cellulose Powder Improves Viscosity and Stability

 

One of the most important functional characteristics of sodium carboxymethyl cellulose powder is its ability to control viscosity and improve formulation stability. As a water-soluble derivative of cellulose, carboxymethyl cellulose CMC forms highly stable colloidal solutions when dissolved in water. Even at low concentrations, it can significantly increase the viscosity of liquids, making it an efficient thickening agent in various industrial and food applications.

The rheological behavior of carboxymethyl cellulose CMC depends largely on its degree of substitution (DS) and molecular weight. Higher molecular weight grades generally provide stronger thickening performance, while lower viscosity grades are preferred when flowability is required. This flexibility allows manufacturers to fine-tune product texture, suspension stability, and flow characteristics.

In food applications, sodium carboxymethyl cellulose powder helps prevent ingredient separation, improves mouthfeel, and enhances shelf stability. In oil drilling fluids, it stabilizes drilling mud by controlling fluid loss and improving suspension performance. In detergents and coatings, it enhances uniform dispersion and prevents sedimentation.

Because of its strong water retention capacity, carboxymethyl cellulose CMC also reduces syneresis in formulations. This is especially valuable in products exposed to temperature fluctuations or long storage periods. Overall, sodium carboxymethyl cellulose powder serves as a multifunctional rheology modifier, offering predictable and stable performance across industries.

 

Factors Affecting the Quality of Carboxymethyl Cellulose CMC Powder

 

The quality of carboxymethyl cellulose CMC directly influences its performance in industrial and food applications. Several key parameters determine the overall effectiveness of sodium carboxymethyl cellulose powder, including purity, degree of substitution (DS), viscosity level, particle size distribution, and moisture content.

The degree of substitution is one of the most critical factors. It reflects how many hydroxyl groups in cellulose are replaced by carboxymethyl groups. A higher DS typically improves water solubility and enhances thickening capability. However, the ideal DS varies depending on the application requirements.

Viscosity grade is another decisive factor. Different industries require specific viscosity ranges to achieve desired texture, stability, or suspension properties. Inconsistent viscosity in carboxymethyl cellulose CMC powder can result in formulation instability or production inefficiencies.

Purity also plays a major role. High-quality sodium carboxymethyl cellulose powder should contain minimal residual salts, unreacted cellulose, or by-products. Impurities may affect transparency, taste (in food applications), or compatibility with other chemicals.

Additionally, particle size affects dissolution speed and dispersion uniformity. Fine and evenly distributed powder dissolves more efficiently and reduces clumping during mixing. Manufacturers must carefully control production processes and perform strict quality testing to ensure stable product performance and compliance with international standards.

 

How to Dissolve and Process Sodium Carboxymethyl Cellulose Powder Correctly

 

Proper dissolution and processing methods are essential to maximize the performance of sodium carboxymethyl cellulose powder. Although carboxymethyl cellulose CMC is water-soluble, incorrect mixing techniques can lead to clumping or incomplete hydration.

To achieve optimal dispersion, it is recommended to slowly add sodium carboxymethyl cellulose powder into water under continuous agitation. High-speed stirring helps prevent the formation of lumps and ensures uniform distribution. In some cases, pre-mixing the powder with dry ingredients such as sugar or salt can improve dispersion efficiency.

Water temperature also affects dissolution rate. While carboxymethyl cellulose CMC can dissolve in cold water, slightly warm water often accelerates hydration. However, excessively high temperatures should be avoided, as they may influence viscosity stability depending on the grade.

Allowing sufficient hydration time is crucial. Full viscosity development may take several minutes to several hours, depending on molecular weight and concentration. Premature processing before complete hydration can result in inconsistent viscosity and performance.

For industrial-scale production, controlled feeding systems and proper agitation equipment are recommended to ensure efficient processing of sodium carboxymethyl cellulose powder. By following correct dissolution procedures, manufacturers can achieve stable rheological performance and maintain consistent product quality.

 

 

BARANG	JANGKAUAN
Warna	Putih susu
Viskositas (1% Solusi Mpa.S)	50-1200
Khlorida(%)	＜1,8%
Tingkat substitusi	0.6-0.9
PH	6.0-8.5
Kemurnian	99.5%
Kelembapan (%)	＜10%

 

 

CMC tidak hanya merupakan penstabil dan pengental pengemulsi yang baik dalam aplikasi makanan, tetapi juga memiliki kemampuan pembekuan dan peleburan yang sangat baik

stabilitas, dan dapat meningkatkan rasa produk dan memperpanjang waktu penyimpanan。

Dalam susu kedelai, es krim, es krim, jeli, minuman, konsumsi kalengan sekitar 1% ~ 1,5%. CMC juga dapat digunakan dengan cuka, kecap, minyak sayur, jus buah, jus daging, jus sayuran dan dispersi pengemulsi stabil lainnya, dosisnya 0,2% ~ 0,5%.

Khusus untuk kinerja emulsifikasi hewani, minyak nabati, protein dan larutan berair sangat baik, dapat membentuk emulsi homogen yang stabil.

Karena aman dan terpercaya, dosisnya tidak dibatasi oleh standar kebersihan makanan ADI.

 

Fungsi CMC dalam produksi pangan：

1.pengentalan: viskositas pada konsentrasi rendah. Dapat mengontrol viskositas dalam proses pengolahan makanan dan memberi rasa pelumas pada makanan;

2. retensi air: mengurangi kontraksi dehidrasi makanan, memperpanjang umur simpan makanan;

3.stabilitas dispersi : menjaga kestabilan mutu pangan, mencegah stratifikasi minyak dan air (emulsifikasi), pengendalian

ukuran kristal pada makanan beku (mengurangi kristal es);

4.pembentukan film: pada makanan yang digoreng membentuk lapisan film, mencegah penyerapan minyak yang berlebihan;

5. Stabilitas kimia: stabil terhadap bahan kimia, panas dan cahaya, dengan ketahanan jamur tertentu;

6.inersia metabolik: sebagai bahan tambahan makanan, tidak akan dimetabolisme, di dalam makanan tidak menyediakan kalori.

 

Sebagai pengental dan penstabil produk susu asam, CMC mencegah protein dalam produk susu menggumpal,

mengendap dan melapisi, menjadikan produk susu memiliki rasa yang unik dan lembut.

Sebagai bahan penahan air pada kue kering dan isian selai, CMC mencegah dehidrasi makanan, memberikan tiksotropi tertentu, meningkatkan stabilitas penyimpanan, meningkatkan kilap kue kering, dan mencegah retak.

 

CMC dapat digunakan sebagai bahan pengukur kertas pada industri pembuatan kertas, pada industri keramik sebagai eksipien billet, pemlastis, bahan penguat, digunakan sebagai bahan perekat pada industri tekstil, kosmetik sebagai hidrosol, sebagai ketahanan terhadap pengendapan kembali kotoran.

bahan dalam deterjen, dalam lumpur pengeboran minyak dapat digunakan untuk melindungi sumur sebagai bahan penstabil, bahan penahan air, digunakan sebagai pengental pada pasta gigi, dll.