一．Product Property
The NP series of emulsifiers (nonylphenol polyoxyethylene ethers) are a type of nonionic surfactants, featuring excellent emulsifying, dispersing and wetting properties. They are suitable for stabilizing oil-water emulsions, have a wide pH adaptability, are resistant to acids and alkalis, and possess good temperature stability.
二．Quality Index:
| Product | Picture | Appearance (25°C) | Cloud Point ℃ (1% Aq.) | Hydroxyl Value (mgKOH/g) | Moisture (%) | pH (1% Aq.) | HLB Value |
| OP-4 |  | Colorless to pale yellow oily liquid | – | 147±5 | ≤1.0 | 5.0-7.0 | 8.0-8.6 |
| OP-7 |  | Colorless to pale yellow oily liquid | – | 110±5 | ≤1.0 | 5.0-7.0 | 11.5-12.5 |
| OP-9 |  | Colorless to pale yellow oily liquid | 60-65 | 93±3 | ≤1.0 | 5.0-7.0 | 12.7-13.4 |
| OP-10 |  | Colorless to pale yellow oily liquid | 68-78 | 87±5 | ≤1.0 | 5.0-7.0 | 13.3-14.0 |
| OP-13 |  | White to pale yellow paste | 87-92 | 72±3 | ≤1.0 | 5.0-7.0 | ~14 |
| OP-15 |  | White to pale yellow paste/solid | 94-99 | 65±3 | ≤1.0 | 5.0-7.0 | ~15 |
| OP-20 |  | White to pale yellow paste/solid | >100 | 52±3 | ≤1.0 | 5.0-7.0 | ~16 |
| OP-30 |  | White to pale yellow solid | >100 | 37±3 | ≤1.0 | 5.0-7.0 | ~17 |
| OP-40 |  | White to pale yellow solid | >100 | 31±3 | ≤1.0 | 5.0-7.0 | ~18 |
| OP-50 |  | White to pale yellow solid | >100 | 24±2 | ≤1.0 | 5.0-7.0 | ~18.5 |
三．Application scope and Usage
| Grade | Properties & Applications |
| OP-4 OP-7 | 1. Soluble in oils and organic solvents, dispersible in water. Excellent W/O emulsifier for industrial applications. 2. Used in textile/metal cleaning, polyacrylonitrile scouring, leveling agent for cationic dyes, and as antistatic agent for plastic conveyor belts. |
| OP-9 OP-10 | 1. Water-soluble with excellent resistance to acid/alkali/salt/hard water. Superior emulsifying, leveling, wetting, dispersing and cleaning properties. Compatible with most surfactants. 2. Applications: Textile leveling/dispersing agent, leather/wool degreaser, crude oil emulsifier, oilfield acidizing penetrant, latex polymerization emulsifier, fiberglass lubricant, and cosmetic emulsifier. |
| OP-13 OP-15 OP-20 OP-30 OP-40 OP-50 | 1. Highly water-soluble with excellent chemical resistance. Outstanding emulsifying, wetting, dispersing and solubilizing properties. 2. Used as: Oilfield emulsifier/demulsifier, latex stabilizer, high-electrolyte wetting agent, cosmetic emulsifier, and industrial solubilizer. |
四．Package and Storage
Packed in 200kg iron drums and 50kg plastic drums.
This series of products are non-flammable and can be stored and transported in accordance with the storage and transportation methods for general chemicals.
Store in a dry and well-ventilated place.
Shelf life: two years.
