JH-1251-1Metal Pretreatment Chemicals Multi - Purpose Cleaning Agent

Applicable to dipping,spraying and degreasing for steel,aluminum,zinc,copper and magnesium parts

Controls parameter:

Configuration concentration: Add 40~80 kgs of JH-1251 into every 1000 liters tank liquor.

Appearance: Colorless to milky white liquid

Free alkalinity points: 0.3~2 points

Specific gravity (25℃): 1.0±0.05

PH value 9~11

Spraying pressure 0.8~2.0bar

Tank liquor temperature 40~60℃

Dipping time 3~15 minutes

Spraying time 60~80 seconds

Testing method:

Transfer 10ml of sample into a 250ml conical beaker with a pipette,add 2~3 drops of phenolphthalein into conical beaker,titrate the sample with 0.1n hydrochloric acid solution until the pink color disappears,the ml number of 0.1n hydrochloric acid solution consumed is the number of free alkali point.

Transfer 10ml sample into a 250ml conical beaker with a pipette.add 2~3 drops of bromophenol green indicator into the conical beaker.titration with 0.1n sulphuric acid solution until sample color changes from blue to green and finally disappears.The number of ml of 0.1n hydrochloric acid solution consumed is the total alkalinity point.
Total alkalinity points are generally used to calculate the ratio of total alkalinity/free alkalinity.

Take a certain amount of sample and keep it at 25 ℃,then measure its density by a hydrometer.

Prepare % weight ratio test solution and measure its PH value with a PH meter.

Tank liquor control:

For 1000 liters of tank liquid,0.8kg of JH-1251 is need for each increase of 0.1 point free alkalinity.Because the cleaning agent is contaminated while using,the total alkalinity will increase.The ratio of total alkalinity and free alkalinity will increase accordingly.This provides a method to test the degree of contamination of the cleaning agent.

The maximum ratio of total alkalinity to free alkalinity will varies with the type of metal being treated,the type of solid impurity on the surface and the temperature of the cleaning agent.

The tank can be drained regularly,continuous or automatic overflow to maintain the ratio of total alkalinity to free alkalinity not exceeding the maximum rated operating value.

Storage requirement:

This product should be stored in dry and cool place to avoid direct sunlight.

Quality guarantee period:1 year

Package:25kg/drum,200kg/drum

Waste water treatment:Regulations of treatment and discharge of chemicals should be understood and followed.

Changzhou Junhe Technology Stock Co., Ltd. is a high-tech enterprise devoted to developing industrial fine chemicals, special equipment and services solution provider which was founded in Changzhou, Jiangsu in 1998.

Zinc flake microlayer corrosion protection coating is one of our core products, our company draw on the experience and lesson of dacromet coating technology from Japan and USA, investing millions on R&D, after 20 years application and diffusion, Junhe zinc flake microlayer corrosion protection coating already become one of the leading brand in China.

Our company have three industrial base: chemical production base, equipment production base, coating job processing base.

Equipment Production Base

Chemical Production Base

Coating Job Processing Base

Company research and development center is located in changzhou national hi-tech zone, owns 15 acres of land for construction and is built around five categories of chemicals and equipment research and development and incubation bases, equipped with standardization on the basis of the experimental equipment and testing equipment of the company's marketing center and two functional departments in the changzhou new north area to create building, the company's three big center and subsidiary system solution for customer demand to provide a solid foundation. The company has passed ISO9001 and TS16949 system certification.

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