At a glance
Based on the row for dilute, 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), NBR, SS 316, SS 304, Aluminium, LDPE, FEP, ECTFE/ETFE, Nylon (PA), Polycarbonate, PVC Flexible, PETG (18)
- Rated B, good resistance
- Acetal (POM) (1)
- Rated C, limited resistance
- none (0)
- Rated D, not resistant
- none (0)
- No data in the source
- Silicone, Polystyrene, Polysulfone, PMP, SAN
- Rated lower at 50 °C than at 20 °C
- PVC Rigid (A → C)
- Rating changes with concentration (20 °C)
- Polycarbonate: A (dilute), B (saturated)
Based on the row for dilute, 20 °C.
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 14459-95-1
- Formula
- C6FeK4N6 x 3H2O
- Concentrations listed
- dilute; saturated
- Also listed as
- Potassium(hexa)cyanoferrat-(II); Potassium iron(II) cyanide
- Name in the source (German)
- Ferrocyankalium
Rating by concentration
Show as a table
| Material | dilute | saturated |
|---|---|---|
| Thermoplastics | ||
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PVC Rigid | A | A |
| PVC Flexible | A | A |
| PMP | – | – |
| Polystyrene | – | – |
| SAN | – | – |
| Polycarbonate | A* | B* |
| PETG | A* | A* |
| Acetal (POM) | B | B |
| Nylon (PA) | A | A |
| Polysulfone | – | – |
| Fluoropolymers | ||
| PTFE | A | A |
| FEP | A | A |
| PVDF | A | A |
| ECTFE/ETFE | A | A |
| Elastomers | ||
| EPDM | A* | A* |
| Viton (FPM) | A* | A* |
| NBR | A* | A* |
| Silicone | – | – |
| Metals | ||
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A* |
* estimated rating, given in the source without a temperature
Resistance table: Potassium Ferrocyanide, dilute
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | – | |
| LDPE | A | A | |
| PP | A | A | |
| PVC Rigid | A | C | |
| PVC Flexible | A | – | |
| Polycarbonate | A* | – | |
| PETG | A* | – | |
| Acetal (POM) | B | – | |
| Nylon (PA) | A | – | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | A | A | |
| ECTFE/ETFE | A | A | |
| Elastomers | |||
| EPDM | A* | – | |
| Viton (FPM) | A* | – | |
| NBR | A* | – | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | A | A | |
| Aluminium | A | A | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PMP, Polystyrene, SAN, Polysulfone, Silicone
Resistance table: Potassium Ferrocyanide, saturated
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | A | |
| LDPE | A | A | |
| PP | A | A | |
| PVC Rigid | A | A | |
| PVC Flexible | A | A | |
| Polycarbonate | B* | – | |
| PETG | A* | – | |
| Acetal (POM) | B | – | |
| Nylon (PA) | A | – | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | A | A | |
| ECTFE/ETFE | A | A | |
| Elastomers | |||
| EPDM | A* | – | |
| Viton (FPM) | A* | – | |
| NBR | A* | – | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | A | A | |
| Aluminium | A* | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PMP, Polystyrene, SAN, Polysulfone, Silicone
Rating scale
- A very good resistance
- B good resistance
- C limited resistance
- D not resistant
- – no data
- K no general statement possible
A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions
Which materials resist Potassium Ferrocyanide at high concentrations?
The materials with an A rating (resistant) for Potassium Ferrocyanide at 20 °C are: PTFE, HDPE, PP, PVDF, PVC Rigid, EPDM, Viton (FPM), NBR. These can generally be used in direct contact.
Does temperature affect chemical resistance to Potassium Ferrocyanide?
Yes. 1 of 10 tested materials show a worse rating at 50 °C than at 20 °C for Potassium Ferrocyanide. Materials affected include: PVC Rigid.
Is PTFE safe for Potassium Ferrocyanide?
PTFE is rated A for Potassium Ferrocyanide at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
Does concentration affect chemical resistance to Potassium Ferrocyanide?
Yes. Potassium Ferrocyanide is tested at 2 concentrations (dilute, saturated). Some materials change their rating depending on the concentration.
About this data
The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.
Chemicals with a similar resistance profile
Same 20 °C rating on the share of materials shown.