Next generation phosphate ester based on renewable resources
Hostaphat™ 1738
Edition Date :
February 06, 2026
The new Hostaphat 1738 phosphate ester exhibits an excellent low foam profile and strong emulsification properties offering outstanding performance and superior sustainability in metal working fluid formulations. This, along with excellent Extreme Pressure (EP)/Anti-wear (AW) properties makes this multifunctional product an ideal choice to formulate with in semi-synthetic and synthetic fluids.
Product Information
Benefits
- Excellent foam control
- Favorable hard water stability
- Comparable tapping torque results to industry standards with higher phosphorus content
- Lower phosphorus content
- Excellent emulsification properties
- Easily neutralizes in amines to form stable synthetic metal working fluids
- Suggested for use in metal removal and metal forming applications
Product details
Product Function
- EPAW additive
Chemical Type
- Phosphoric acid esters
Applications
- Hydraulic fluids
- Rolling
- Metal working fluids (semi-synthetic)
- Metal working fluids (fully synthetic)
- Cutting and forming fluid (neat oil)
- Metal working fluids (milky-type)
| Active content | approx. 99 % |
| Appearance (20°C) | light yellow to amber liquid |
| Phosphorus content | approx. 2.5 % |
| Kinematic viscosity (25 °C) | 1290 cSt |
| Kinematic viscosity (50 °C) | 517 cSt |
| Kinematic viscosity (100 °C) | 51 cSt |
| pH value | approx. 3 |
| Surface Tension (1 g/L, 25 °C) | approx. 36 mN/m (as TEA salt) |
| Acid Value | approx. 65 mg KOH/g |
| Density (20°C) | approx. 1.02 g/ml |
| Pour point | approx. 7 °C |
| Solubility | Soluble in naphthenic, paraffinic, castor, and canola oils. Also dispersible in water |
Metalworking fluids: straight oils, soluble oils, semi-synthetics, and synthetics
