Hydroxyethyl Cellulose

Product Details

CasNo： 9004-62-0

MF： C29H52O21

Appearance： powder

Delivery Time： 15 days

Packing： 25kg/bag

Purity： 99%

Basic Information

• English Name: Hydroxyethyl Cellulose, abbreviated as HEC
• CAS Number: 9004 - 62 - 0
• Chemical Structure: It is the product of the etherification reaction between alkali - cellulose and ethylene oxide or chloroethanol. The hydroxyl groups on the glucose units in the cellulose molecule are substituted by hydroxyethyl groups, belonging to non - ionic water - soluble cellulose ethers.
• Appearance: Usually white to off - white fibrous or powdery solid.
• Molecular Formula: (C2​H6​O2​)n​
• Density: 0.75g/mL at ℃
• Softening Temperature: ℃
• Decomposition Temperature: ℃

Technical Indicators

• Moisture Content: ≤5.0%
• pH Value (1% solution in distilled water): 6.0 - 8.5
• Degree of Substitution (DS): 1.8 - 3.0
• Particle Size: At least 90% passes through 80 - mesh sieve.
• Viscosity: The viscosity range is 300 - 150,000 mPa·s.

Product Characteristics

• Solubility: It can be dissolved in hot water or cold water, and does not precipitate at high temperature or boiling, which gives it a wide range of solubility and viscosity characteristics, as well as non - thermal gelation.
• Compatibility: It is non - ionic and can co - exist with a wide range of other water - soluble polymers, surfactants, and salts. It is an excellent colloidal thickener for solutions containing high - concentration electrolytes.
• Water - Retention Capacity: Its water - retention capacity is twice that of methyl cellulose, and it has good flow regulation.
• Dispersion and Protection Properties: The dispersion ability of HEC is the worst compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, but its protective colloid ability is the strongest.

Application Areas

• Petroleum Industry: Used as a thickener and fluid - loss agent for water - based drilling fluids and completion fluids. It has an obvious thickening effect in salt - water drilling fluids and can also be used as a fluid - loss agent for oil - well cement.
• Coating Industry: As a latex thickener, it can prevent the gelation of pigments, help the dispersion of pigments, improve the stability of latex, and improve the rheology of coatings.
• Construction Industry: Used in concrete mixtures, mortars, gypsum plasters, etc. to play a role in water retention. It can also extend the correction and open time of plasters or mastics, and reduce crusting, slippage and sagging phenomena.
• Daily Chemical Industry: In shampoos, conditioners, cosmetics, etc., it is an effective binder, thickener, stabilizer and dispersant.
• Other Fields: It can be used as a sizing agent in the textile industry, an additive in the paper - making industry, and a thickener in pesticide emulsions and suspension formulations.

Packaging and Storage

• Packaging: Usually, the packaging specification is 25 kg/bag. The inner bag is a polyethylene film bag, and the outer bag is a polypropylene woven bag or a multi - layer paper bag.
• Storage: It should be stored in a cool, dry and well - ventilated warehouse, away from fire sources and water sources, and avoid direct sunlight.