JHZ-724 Liquid whitening agent (tetrasulfonic acid)

1. Main technical indicators:

Molecular formula: C40H40N12S4O16Na4

Relative molecular mass: 1165.04 (according to the 1997 international relative atomic mass)

Maximum UV absorption wavelength: 350nm

Implementation standard: HG/T 3727—2010

Fluorescence intensity (equivalent to standard product), points: 34±1

Whiteness WCIE (difference from whiteness of standard product): ±3

Appearance: Amber liquid

Viscosity: ≤ 50mPa.s (25℃)

PH value: 8-10

Density: 1.05-1.15g/cm3

Ionicity: anionic

2. Feature:

2.1 Easy to use, miscible with water in any proportion, suitable for automated continuous addition and metering.

2.2 It has good acid resistance and has excellent whitening effect even at a low pH value.

2.3 Compared with similar products, it has comparable light fastness and acid and alkali resistance.

3. Scope of application:

3.1 Perform fluorescent whitening in pulp.

3.2 Fluorescent whitening in surface sizing

3.3 Perform fluorescent whitening during the coating process.

4. Usage:

4.1 It can be added directly into the pulp. Conventional dosage: 0.05-1.2% (absolutely dry pulp).

4.2 Used together with commonly used starches, CMC, and PVA in surface sizing to obtain better whitening effects. The normal dosage is 0.5-10g/L.

4.3 Conventional dosage in the coating process: 0.1-1.4%. Better results will be obtained when PVA, CMC, and starch are used together.

5. Packaging and storage:

Packaging: 50kg, 200kg, 1000kg or plastic drum;

Storage: should be stored in a cool, dry and ventilated warehouse;

Storage period: 12 months.