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  • Bromopol 99  CAS 52-51-7
  • Bromopol 99  CAS 52-51-7
  • Bromopol 99  CAS 52-51-7
  • Bromopol 99  CAS 52-51-7
  • Bromopol 99  CAS 52-51-7
Bromopol 99  CAS 52-51-7 Bromopol 99  CAS 52-51-7 Bromopol 99  CAS 52-51-7 Bromopol 99  CAS 52-51-7 Bromopol 99  CAS 52-51-7

Bromopol 99 CAS 52-51-7

  • CAS:52-51-7
  • Purity:99% min
  • Appearance: White or almost white crystals or crystalline powder
  • Package:25kg drum
  • Product description: Bronopol is a kind of colorless or yellowish brown crystals with the m.p.of 130 °C. It can be dissolved in acetone, 2 – methoxy ethanol, toluene and other organic solvents.Widely used in industrial ci

BRONOPOL 99  (2 Bromo 2 nitro 1 3 propanediol) CAS 52-51-7

Preservative for the Treatment of Industrial Process Systems

Product Name: Bronopol 99 (BNP)

Chemical name: 2-Bromo-2-nitro-1,3-propanediol

CAS NO.: 52-51-7

Molecular weight: 200

Melting Point: 123-130°C

Moisture: 0.5% max

Technical index


White or almost white crystals or crystalline powder

Melting point (MP)

123-130 ° C

Acidity or Alkalinity

PH 5.0-7.0 (1% w/v)



Water (KF Method I B )

0.5% max

Sulphated Ash

0.1% max


Soluble in water (25 wt / volume / 25 ° C) and polar organic solvents

Remarks: The remaining indicators are conformed to the Standard of BP.


Biocide, mainly used in industrial circulating water, paper pulp, paint, plastics, cosmetics, wood, cooling water circulation system, as well as sterilization, mildew, anti-corrosion and algae killing for industrial purposes.


(1) Highly efficient, with broad-spectrum antibacterial activity, can inhibit the growth of most bacteria at25ppm concentration, and better for Gram-negative bacteria and various Pseudomonas species;

(2) Low dosage and low price. In cosmetics, the dosage is generally 0.01~0.05%, which is one tenth of the common preservatives of parabens, and the cost of use is more than half of that of parabens;

(3) Good compatibility. Nutrients such as protein and various cationic, anionic, nonionic surfactants will not affect its antibacterial effect;

(4) A suitable pH range. It is effective in the range of pH 4~9, that is, in the environment of weak acidity, neutrality and partial alkali, it can maintain strong antibacterial effect after adding;

(5) Good water solubility and easy to use. It is easily soluble in water and has a solubility of 25g in water at 25 ° C. It is extremely convenient to use.

Range of use and amount of addition:

This product can be used in creams, lotions, shampoos and other products. The general addition amount is 0.2-0.5‰, and the maximum allowable addition amount in the daily chemical product is 1‰, and there is no residue in the discharge, which will not cause cumulative pollution to the environment. Application pH range: 4-8; application temperature range: generally pre-dissolved in an appropriate amount of water, added below 60 °C.


This product can be applied in a wide range of pH, with the best range from acidic to neutral. It is unstable under high temperature and alkaline conditions, and the color becomes dark under the sun light. It is compatible with most surfactants, but when a substance containing a -SH group in a cosmetic raw material, such as cysteine, etc., its antibacterial activity is lowered. In addition, aluminum metal can also reduce the antibacterial activity of this product.

Package: 25kg cardboard drum;

Storage: Sealed, moisture-proof, dark-proof, shelf life of 4 years.

Mode of Transport:

Multiple transportation methods could be selected by customers, including Ocean Transport, Air Transport, Rail Transport and Courier Transport. Our priciple is to delivery the goods reached to customers with shortest time and ecomomic trasnport mode, safe and fast.

Quality Inspection Center

Sinotrust strictly control goods quality, each lot must be strictly inspected by QA dept. The goods will be allowed to leave factory only after quality qualified. Meanwhile the sample for each lot will be kept in lab at least one year. When issues happened, we or the third authority party could reinspect.

Before new customers issue order, free sample will be supplied for test. And we ensure the sample quality is same as bulk quality.

Our service - Right Partner, Better Future.

With more ten years experience in industrial biocide, preservatives and mold inhibitor, We provide comprehensive customer service from the initial consultation to the final delivery of your order. We always serves with enthusiasm and accepts full responsibility in customers' work.Our priority is your satisfaction and growing solid relationships with each of our customers.

You are incharged for signing the contract, all the rest will be done by us. We guarantee belows:

1) Goods quality will be same as samples, or COA which supplied to you firstly.

2) Package also could be done accordingly to cusotmer's request, safe and good look. Conform to standard of dangerous goods shipment. And photoes will be taken during the process of container load, which will be supplied to each customers.

3) Shipment will be done by us, booking the direct, non-transfer vessel for prompt shipment. And shipping details will be advised.

4) After vessel left, the full set shipping docments will be scaned & deliveried to you on time.

5) Any issues after picking up goods or during the usage, pls contact us without hesitation.

As we expand our business all around the world, we look forward to cooperating with you in the near future.