Hydroxypropyl methylcellulose (HPMC)

Hydroxypropyl methylcellulose is specially obtained by esterification of ultra-pure cotton cellulose under alkaline conditions.

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Description

Description

Product name: Hydroxypropyl methylcellulose (HPMC)
MF: C12H20010
Purity: 99.9%
CAS Number: 9004-65-3
EINECS number: 220-971-6
Appearance: White Powder

certificate of authenticity

Index name	TEST BASE	TEST RESULT
Character	This product is a white or off-white, odorless, fibrous or granular powder. Practically insoluble in absolute ethanol, ether or acetone: in cold water it swells into a clear or slightly cloudy colloidal solution.	This product is a white or off-white, odorless, fibrous or granular powder. Practically insoluble in absolute ethanol, ether or acetone: in cold water it swells into a clear or slightly cloudy colloidal solution.
Identification-1	Should be a blue-green ring	Blue-green ring
Identification-2	Forming a flexible film	Forming a flexible film
Identification-3	The flocculation temperature is greater than or equal to 50 degrees.	62.0 degrees
F	pH value {{0}}.0-8.0	6.3
Viscosity mPa. WITH	80%- 120% of specified viscosity 15	17
Insoluble substance in water%	Less than or equal to 0.5	0.4
Drying loss%	Less than or equal to 5.0	3.2
Residue on ignition%	Less than or equal to 1.5	0.9
Heavy metals ppm	Less than or equal to 20	10
arsenic%	Less than or equal to 0.0002.	0.0001
Aerobic bacteria CFU/g	Less than or equal to 1000	10
Bacteria and yeast CFU/g	Less than or equal to 100	10
coli	No	Not found
Hydroxypropoxy%	7.0-12.0	8.2
Methoxy%	27.0-30.0	29.1
CONCLUSION:	The product meets the above standard.

Application

1. One of the most common uses of hydroxypropyl methylcellulose is in the construction industry. It is used as a thickener and binder in cement and gypsum-based products, including mortars, grouts, plasters and joint cements, to improve their workability, strength and water-retaining properties. It also acts as a protective colloid, preventing precipitation and segregation of mixture components. Additionally, as a water-soluble polymer, it improves the bonding and adhesion of the building material, resulting in a stronger, more consistent product.

2. Another important application of hydroxypropyl methylcellulose is in the pharmaceutical industry. It is used as a binder, thickener and disintegrant in tablet formulations to improve tablet strength, disintegration and solubility. It is non-toxic and inert, making it suitable for use in oral and topical formulations. It is also used in other pharmaceutical products such as ophthalmic solutions and nasal sprays due to its mucoadhesive properties and ease of preparation.

3. In the food industry, HPMC is used as a thickener, emulsifier and stabilizer in processed foods such as dairy products, baked goods, sauces and salad dressings. It is also used to encapsulate vitamins and minerals to increase stability and bioavailability. It is a safe and natural food ingredient, making it a popular alternative to synthetic additives.

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