Introduktion til Hydroxypropyl Methyl Cellulose HPMC CAS 9004 65 3

Hydroxypropylmethylcellulose (HPMC), hvis kinesiske navn er hydroxypropylmethylcellulose, er en semisyntetisk, ikke-ionisk celluloseether opnået ved kemisk modificering af naturlig cellulose. Dette hvide pulver kan danne en gennemsigtig viskøs opløsning efter opløsning i vand. Den har fremragende fortykkelse, vandophobning, stabilitet og filmdannende egenskaber. Det er et uundværligt multifunktionelt additiv inden for mange områder, såsom byggeri.

Karakteristika og fordele ved Hydroxypropyl Methyl Cellulose HPMC CAS 9004 65 3

Fremragende vandopløselighed: Det kan hurtigt opløses i koldt vand for at danne en klar og stabil opløsning.

Effektiv fortykkelse og vandretentionsevne: Forøg materialets viskositet, reducerer effektivt vandfordampningen, og forbedre arbejdseffektiviteten.

God stabilitet: Det har god stabilitet over for syrer, alkalier, og salte, og er velegnet til en lang række pH-værdier.

Filmdannende og beskyttende effekter: Efter tørring, det danner en sej og gennemsigtig film for at beskytte underlaget og forhindre vandindtrængning og fordampning.

Ikke-giftig og ikke-irriterende: Det har god biokompatibilitet og er velegnet til medicin og fødevarer.

Justerbarhed: Ved at ændre graden af ​​substitution og molekylvægt, dens ydeevne kan justeres for at opfylde forskellige applikationskrav.

Specifikationer for Hydroxypropyl Methyl Cellulose HPMC CAS 9004 65 3

Hydroxypropylmethylcellulose (HPMC)– Produktspecifikationer

Grundlæggende info

CAS nummer: 9004-65-3
Kemisk opkald: Hydroxypropylmethylcellulose
Molekylær formel: C₈H₁₆O₆ (duplicating system).
Se: Hvid til råhvid, fritflydende pulver.

Secret Physical and Chemical Residences

HPMC er en ikke-ionisk celluloseether fremstillet af naturlig cellulose. It liquifies quickly in cold water but does not liquify in warm water over its gelation temperature. The item develops clear, colorless solutions with great film-forming capacity. It stays steady over a large pH array (almindeligvis 3– 11).

Thickness varies by grade. Common thickness varieties consist of 5 mPa · s til 100,000 mPa · s kl 2% focus and 20 °C. This enables customers to select the right kind for their specific demands– whether for enlarging, bindende, eller vandretention.

Purity and High Quality Criteria

The product satisfies major pharmacopeial requirements, bestående af USP-NF, EP, og JP, when used in pharmaceutical applications. For commercial use, it follows appropriate food and building sector standards.

Typical assay (tør basis): ≥ 99.5%.
Tab ved udtørring: ≤ 5.0%.
Residue on ignition: ≤ 1.5%.
Tunge stål (som Pb): ≤ 10 ppm.
Arsenik: ≤ 3 ppm.

Lagerplads og håndtering

Køb HPMC på en fantastisk måde, helt tørt sted væk fra fugt. Maintain containers securely shut. The shelf life is normally 24 måneder, når de opbevares korrekt. Hold dig væk fra direkte eksponering for vejledende solskin eller høj fugtighed.

Almindelige applikationer

HPMC is commonly used in structure materials (like ceramic tile adhesives and provides), stoffer (as a tablet binder or controlled-release agent), mad (as a thickener or stabilizer), og kosmetik (for structure and dampness control). Its versatility comes from constant efficiency, sikkerhed, and compatibility with many various other active ingredients.

Anvendelser af Hydroxypropyl Methyl Cellulose HPMC CAS 9004 65 3

Anvendelser af hydroxypropylmethylcellulose (HPMC) CAS 9004-65-3

Building and construction Industry

Hydroxypropylmethylcellulose (HPMC) plays an essential role in contemporary building and construction products. It is added to cement-based products like ceramic tile adhesives, plastre, og selvnivellerende forbindelser. HPMC boosts workability by maintaining water, which helps cement moisten appropriately. Dette resulterer i kraftigere bindinger og færre revner. The compound additionally decreases drying time, providing workers even more time to use and smooth the material.

Narkotika

I medicin, HPMC serves as a secure and effective active ingredient. It is frequently used in tablet computers as a binder or finish representative. The material regulates just how quickly a medicine liquifies in the body, making certain stable release over time. Eye drops typically consist of HPMC also– it serves as a lubricant to eliminate dry skin and irritation. Due to the fact that it is safe and well-tolerated, governing agencies accept its use in many dental and topical medicines.

Madmarked

HPMC is likewise accepted as a preservative (E-nummer E464). Det virker som et fortykningsmiddel, stabilisator, og emulgator. You can locate it in low-fat foods, baked products, and dairy options. It assists preserve texture and protects against separation of components. Considering that it is plant-based and gluten-free, it suits numerous dietary needs.

Other Makes use of

Past these major areas, HPMC appears in paints, kosmetik, and agricultural items. I vandbaserede malinger, it improves viscosity and prevents pigment settling. Skin care lotions utilize it for smooth application and moisture retention. Farmers apply HPMC in seed coatings to sustain germination and secure young plants. Its adaptability originates from being water-soluble, chemically stable, and suitable with lots of other materials.

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5 Ofte stillede spørgsmål om Hydroxypropyl Methyl Cellulose HPMC CAS 9004 65 3

Ofte stillede spørgsmål om hydroxypropylmethylcellulose (HPMC)

Hvad er HPMC?

HPMC står for Hydroxypropyl Methyl Cellulose. Det er et hvidt eller råhvidt pulver lavet af naturlig cellulose. Folk bruger det i mange produkter som medicin, mad, og byggematerialer. Det opløses i koldt vand og danner en klar, tyk opløsning.

Er HPMC sikker at bruge?

Ja, HPMC er sikkert. Regulatory groups like the FDA and EFSA approve it for use in food and drugs. Det passerer gennem kroppen uden at blive absorberet. Det betyder, at det ikke forårsager skade, når det bruges som anvist.

What does HPMC do in construction products?

I byggeriet, HPMC improves workability and water retention in cement-based materials. It helps tile adhesives, plastre, and renders stay smooth and easy to apply. It also stops them from drying too fast, which makes the final product stronger.

Hvordan skal jeg opbevare HPMC?

Opbevar HPMC på køl, tørt sted. Use a sealed container to block out moisture. Hvis det bliver vådt, det kan klumpe eller miste effektivitet. Always check the expiration date before use.

Can HPMC be used in vegetarian or vegan products?

Ja. HPMC comes from plant-based cellulose, not animals. It is widely accepted in vegetarian and vegan formulations. Many capsule shells and food thickeners use HPMC as a clean-label alternative to gelatin.