HPMC 4K

Low-to-mid viscosity HPMC for flowable construction systems and light rheology control.

Overview of HPMC 4K

HPMC 4K is a hydroxypropyl methyl cellulose grade designed for flowable or lower-viscosity construction systems. It supports controlled water retention, easier mixing, and light rheology adjustment where the formula must keep good spread and workable consistency.

Technical Specifications

Grade: HPMC 4K

Chemistry: Hydroxypropyl Methyl Cellulose

Label Value: 4000

Viscosity: NDJ 2% 3,200~4,600 mPa·s at 20°C

Other Viscosity Reference: RV 2% 2,500~4,000 mPa·s

CAS No.: 9004-65-3

Methoxy Group Content: 19.0–24.0%

Appearance: White to off-white powder

Hydroxypropoxy Group Content: 4.0–12.0%

Ash: Calculated as NaCl ≤4.0%; calculated as sulfate ≤5.0%v

pH: (1% aqueous solution) 5.0–8.5

Particle Size: <0.200 mm (through 60 mesh) min. 98.5% <0.180 mm (through 80 mesh) min. 90.0%

Benefits of HPMC 4K

Low-to-mid viscosity build for flowable systems
Supports controlled water retention without excessive body
Improves mixing and spreading behavior
Useful in self-leveling and light construction systems
Delayed solubility supports easier dispersion
Practical for grade screening in construction formulas

Typical Applications of HPMC 4K

1.Self-leveling mortar and flowable construction systems
Suitable where easier flow and controlled water retention are required.

2.Gypsum-based products
Useful where the formula needs smooth mixing, workable consistency, and light body.

3.Ceramic and construction processing systems
Appropriate for testing where low-to-mid viscosity and binding support are needed.