SDS and COA
One safety data sheet per grade, one certificate of analysis per batch, batch number printed on the drum.
Grade C
Component C — general purpose, wide process window
The volume grade for plants running several can types on one line, where changing settings between orders costs more than the material.
In the drum
What arrives, and what it is
Component C tolerates a wider band of line temperature, mix-ratio drift and operator variation than Component A. The finished foam lands in class II: 60–80 kPa adhesion, 75–85% closed cell, 2–3.5% shrinkage over 48 hours. For general engineering joints and home windows that is the right trade — you spend the difference on line time, not on returns.
Packed in 200 L steel drums, five drums to the tonne. Every drum carries the batch number that matches the COA in your inbox.
| Property | Typical value |
|---|---|
| Appearance | light yellow to brown, viscous |
| Density at 25 °C (g/cm³) | 1.02–1.10 |
| Viscosity at 25 °C (mPa·s) | 250–600 |
| Flash point (°C) | > 100 |
| Water content (%) | ≤ 0.15 |
| Storage | 5–30 °C, dry, sealed drum |
| Shelf life in the drum | 6 months, unopened |
| Packaging | 200 L steel drum × 5 = 1 t |
Typical values for orientation only. Final parameters are confirmed for the selected grade and your filling conditions.
Finished foam
What your line can reach with this grade
Typical values for the foam this component is formulated for, at the isocyanate share shown. Your numbers follow your can, your gas and your line — the sample is how we narrow them.
| Finished-foam parameter | Typical value |
|---|---|
| Isocyanate share of net weight (α) | 24–27% |
| Isocyanate : polyol ratio (β) | 0.38–0.45 : 1 |
| Apparent density, free rise (kg/m³) | 18–22 |
| Compressive strength at 10% (kPa) | 22–35 |
| Tensile adhesion on aluminium (kPa) | 60–80 · class II |
| Dimensional stability, 48 h (%) | 2.0–3.5 |
| Closed-cell content (%) | 75–85 |
| Yield per 750 ml can, 20 × 20 mm joint | 24–28 m |
| Shelf life, unopened can | 9–12 months |
Typical values for orientation only. Final parameters are confirmed for the selected grade and your filling conditions.
Fit and limits
A grade is defined as much by what it refuses to do
Where it fits
- Can types: 750 ml and 500 ml, gun and straw grades.
- Best for plants that switch can types and brands weekly.
- Standard valve and standard propellant — no special hardware.
Where it does not
- Not the first choice for exposed facades or permanently wet joints.
- Movement joints above 10 mm need Component A or a different system.
- Store below 30 °C — a wide window is not a licence to store warm.
On the line
Four things that decide the first run
- Fill the first two drums strictly by the parameter card and log every weight. That log is what lets you loosen later.
- Hold the drum at 18–25 °C. Warm it slowly if the store is cold — never with an open flame, never in one spot.
- Flush the line when you change grades: 20–30 minutes, then recalibrate the fill weight.
- Keep one can per batch, cut it the next day and photograph the section. Two years of those photos end most quality arguments.
Documents
What travels with the drums
Form E and packing list
ASEAN origin documentation prepared before booking, so the customs broker is not chasing paper at the port.
Transport appraisal
Non-dangerous goods appraisal on request — the document a shipping line will ask for when the drum is a raw material.
Marks and traceability
Pallet marks in your format, retained samples kept two years, and a written answer if a batch ever needs investigating.
Questions
Three questions on this grade
Where does Component C stop being enough?
At exposed facades, permanently wet joints and movement above 10 mm. Below that line, class II performance is the right engineering choice.
Does a wide process window mean I can skip the parameter card?
No. It means the line forgives more. Fill the first two drums by the card, log the weight, and then you can loosen. Skipping the log is how a good grade gets blamed for a bad day.
Can I run C and A on the same line in one shift?
Yes, with a flush and a fresh calibration between them. Plan 20–30 minutes. Mixing them without a flush gives you a batch that matches neither datasheet.
Send your can spec — we reply with the grade, not a price list.
Technology brand
Request this datasheet and a sample
- 1 tonne minimum, five 200 L drums
- SDS, COA and Form E with every shipment
- We reply within 24 hours, Monday to Saturday.