ALC-H Series · ALC-H100C
ALC-H100C
9004-65-3
3912.39
Technical specification
Every value is shown with its test condition. Parameters that are set per batch are confirmed on the batch COA.
| Parameter | Value | Test condition / method |
|---|---|---|
| Chemical name | Hydroxypropyl methyl cellulose | — |
| CAS number | 9004-65-3 | — |
| HS code | 3912.39 | — Final classification per destination customs. |
| Appearance | White to off-white powder | — |
| Ionicity | Non-ionic | — |
| Substitution degree (DS / MS) | Methoxyl 19.0–24.0% / Hydroxypropyl 4.0–12.0% | Determined per production batch, USP/GB method |
| Moisture content | Max 5.0% % | Halogen moisture analyser, 105 °C |
| pH | 5.0–8.0 (1% solution, 25 °C) | 1% aqueous solution, 25 °C |
| Particle size | Min 98% through 80 mesh (180 µm) | Dry sieving, 80 mesh |
| Bulk density | 300–500 g/L g/L | Untapped, as packed |
| Gel temperature | 55–70 °C (2% solution) °C | 2% aqueous solution, heating rate 1 °C/min |
| Ash content | Max 5.0% (as sulphate) % | Muffle furnace, 800 °C |
Typical values for this grade, not a specification guarantee — the contractual figure is the one stated in the COA issued for your batch. Viscosity is measured on a 2% aqueous solution at 20 °C, Brookfield LV, 20 rpm.
How HPMC works in a mortar is the same across grades — see the HPMC category page for the water-retention, anti-sag, open-time and film-forming mechanisms behind every grade. What changes with viscosity is the number and the application band, and those are on this page.
Applications
ALC-H100C is used in the following systems — Tile adhesive (C1 / C2), Skim coat, Joint filler. Which viscosity band suits which system is set out in the application-and-viscosity table on the HPMC category page .
A grade that is wrong for the system costs more than the price difference between two grades. Tell us the system and we will tell you if this one is a poor fit.
Batch consistency, export documents and response time do not change with viscosity grade — they are set out under six things procurement can verify on the home page.
Sample, packaging & storage
200 g free of charge, shipped from stock. Dispatch arrangements are set out in the sample confirmation.
Store sealed and dry, below 35 °C, away from direct sunlight. Shelf life: 24 months from production date in the unopened original packaging. MOQ 1 metric ton per grade.
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FAQ
Batches typically measure between 9,000 and 12,000 mPa·s against a nominal 10,000 — that is −10% to +20% of nominal. The spread comes from the test method, the test conditions and the instrument, not from a drifting process. The contractual figure is the one stated on the batch COA, measured at 2% aqueous solution and 20 °C.
Because it balances the two failure modes of an adhesive. Too low a band and the ribbed bed slumps on a vertical face; too high and the mix turns short, raises water demand and becomes hard to trowel. At 10,000 mPa·s a C1 and a C2 adhesive can usually share one grade, which is why this band is the volume seller of the series.
Yes, it works, and some producers run it precisely so that one grade serves both the adhesive and the putty line. Putty usually wants more body than adhesive, so expect to dose toward the top of the range or to blend. If putty is your main product, ALC-H200 or ALC-H1000 is the more natural fit.
Start at 0.30 – 0.45% of binder weight, and treat it as a starting point rather than a recommendation: sand grading, cement type and ambient temperature all move the optimum. Slip has to be re-checked whenever the sand source changes, and the final figure belongs in your plant trial record, not in a datasheet.
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ALC-H100C