NC-919(SS412NC) Methylene(Bis)thiocyanate (MBT)
This product is called Methy lendithiokyanat, MT. In foreign market, it is called 7012. American Drew company named it AMERSTAT(B)282,Nalco Company called it N2731, while AKZO Company named it 948BIOCIDE.
(1) Molecular Weight & Chemical Structure Formula:
M=130.19 C3H2N2S2(or)CH2(SCN)2
CAS:6317-18-6 
(2) Properties:
This product's melting point is 102-1040C. It is almost insoluble in water. In room temperature, its solubility in water is 2.3mg/L. It is soluble in dimethylformamide, etc., is slightly soluble in other organic solvents.
(3) Specification:
|
Appearance |
Yellow needle crystallication |
|
Odor |
Slight pungent taste |
|
Water content % <= |
3.0 |
|
Content % >= |
94.0 |
|
Insoluble matter % <= |
3.0 |
|
pH(0.5% Water solution) |
5.0-7.0 |
(4) Use:
This product is an effective, broad-spectrum biocide good. U.S. Food and Drug Administration (FDA) has approved for its use in food packaging paper and cardboard industry. This biocide has very satisfying killing and inhibition capability to the main bacteria, fungi, algae and protozoa, which are widely existed in industrial cooling water systems. It is especially effective to sulfate-reducing bacteria. Its use only requests low concentration, about 50mg / L in 26 hours to get 98% -99% continuous killing rate. It shows excellent killing effects to cooling water system, the growth of iron bacteria, heterotrophic bacteria and sulfate-reducing bacteria.
(5) NC-919(SS412NC) & Use Way:
This product is not dissolve in water, so needs to be used together with specific dispersant and penetrating agent intended to enable chemicals to effectively dispersed throughout the various parts of the cooling water system to increase the penetration of chemicals to bacteria and algae. NC-906 is one example of our Company's products that contain this product and other solvents and additives.
The product pH range is 6.0-6.5, which is stable for 50 hours before the degradation of 5%, but when pH value reaches 8, it will be rapidly hydrolyzed. Its main hydrolysis product is thiocyanate and formaldehyde, and a small amount of sulfide. The toxicity of these substances is much smaller than this product, and can be volatile in the circulating water to remove. Therefore, in general use of this product, when the fertilizer plants deal with the problems of large population of nitrifying bacteria, pH value decreased, they dose the compound of this product SQ8 (The active content of this product is about 10%) 20-30mg / L, when used for cleaning and stripping, the dosage is 120-140mg / L.
The product pH range is 6.0-6.5, which is stable for 50 hours before the degradation of 5%, but when pH value reaches 8, it will be rapidly hydrolyzed. Its main hydrolysis product is thiocyanate and formaldehyde, and a small amount of sulfide. The toxicity of these substances is much smaller than this product, and can be volatile in the circulating water to remove. Therefore, in general use of this product, when the fertilizer plants deal with the problems of large population of nitrifying bacteria, pH value decreased, they dose the compound of this product SQ8 (The active content of this product is about 10%) 20-30mg / L, when used for cleaning and stripping, the dosage is 120-140mg / L.
(6) Packing & Storage:
This product is packed in 200kg or 25kg plastic drums. Storage period is one year.