CLUSTER 01 · CONSTRUCTIONLIVE
HPMC
HV construction grades
At a glance
CAS9004-65-3
EC / LISTPolymer, no discrete EC number
HS / TARIC3912 39 85
REACHPolymer — exempt from registration under REACH Art. 2(9); monomers covered under Art. 6(3).
PACK FORMAT25 kg multi-wall paper bags · 1 MT big-bag on request
What it does
Hydroxypropyl methylcellulose — the cellulose ether that gives dry-mix mortars and tile adhesives their open time, water retention and workability. The single most price-sensitive line item in a tile-adhesive recipe.
Also known as
Hydroxypropyl methylcellulose · Hypromellose · HPMC cellulose ether · modified cellulose ether · CAS 9004-65-3 · HS/TARIC 3912 39 85 · end-use standard EN 12004
Typical applications
- Tile adhesives (C1 / C2 cementitious)
- Cement-based renders and skim coats
- Self-levelling underlayments
- EIFS / ETICS base coats
- Gypsum-based jointing compounds
Specification band
Viscosity (2% aq.)75 000 – 200 000 mPa·s (HV grades)
Methoxy content19.0 – 24.0%
Hydroxypropoxy4.0 – 12.0%
Moisture≤ 5%
Ash≤ 5%
Particle size≥ 98% through 80 mesh
Industry-typical published bands. Producer-specific values on the COA issued per shipment.
Handling & packaging
- Hygroscopic — store sealed below 25 °C and 60% RH
- Shelf life 24 months in original sealed packaging
- Not classified as hazardous for transport
Documents on file per shipment
Per-batch Certificate of Analysis (COA)Safety Data Sheet (SDS) in EU CLP formatTechnical Data Sheet (TDS) with viscosity and DS valuesREACH polymer status statement
Serica execution notes
- Pre-shipment viscosity verified by third-party lab (SGS or Intertek) against the buyer-specified HV grade.
- Container loaded with desiccant liner; humidity logger on request.
- Delivery terms and invoicing structure are confirmed per quotation according to the material, destination and transaction setup.
- Upon request, can be verified per lot: viscosity (2% aq.), methoxy content, ash, moisture, other specific aspects — third-party lab.
Regulatory references
SPEC-MATCH LADDER · 3 TIERS
T1 · SPEC → SPECWritten spec match
T2 · SAMPLE → LAB DELTAReference-sample benchmark
T3 · MIX → FINISHED PARTFormulation-in-context trial
How we prove the match →
AD-HOC GRADE DEVELOPMENT
Need a variant outside these bands?
Producers develop custom grades on request — viscosity, mesh, purity band, additive package.
Brief a custom development →
Sample requests and delivered pricing for HPMC are quoted per buyer; the applicable Incoterm, invoicing structure, MOQ and lead time are confirmed in the quotation.