Molecular Structure of Bronopol (CAS NO.52-51-7): 

IUPAC Name: 2-bromo-2-nitropropane-1,3-diol 
Empirical Formula: C₃H₆BrNO₄ 
Molecular Weight: 199.988 
Index of Refraction:  1.574 
Surface Tension:  74.1 dyne/cm 
Density:  2.018 g/cm³ 
Flash Point: 170.3 °C 
Enthalpy of Vaporization:  69.86 kJ/mol 
Boiling Point: 358 °C at 760 mmHg 
Vapour Pressure: 1.45E-06 mmHg at 25°C 
Synonyms:1,3-Propanediol, 2-bromo-2-nitro- ; 2-Bromo-1-nitro-1,3-propanediol ; 2-bromo-2-nitro-3-propanediol ; 2-Bromo-2-nitropropan-1,3-diol ; 2-Nitro-2-bromo-1,3-propanediol ; 3-Propanediol,2-bromo-2-nitro-1 ; beta-Bromo-beta-nitrotrimethyleneglycol

Hazard Codes Xn,N
Risk Statements 21/22-37/38-41-50 
R21/22:Harmful in contact with skin and if swallowed. 
R37/38:Irritating to respiratory system and skin. 
R41:Risk of serious damage to the eyes. 
R50:Very toxic to aquatic organisms.
Safety Statements 26-37/39-61 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

 Bronopol (CAS NO.52-51-7) is a white crystals,would burn easily,it may detonate under strong shock.While heated to decomposion evolving toxic gases. Toxic substances through skin absorption, inhalation or ingestion.

 Bronopol (CAS NO.52-51-7) is a killing bacterial agents,it can effectively control a variety of plant pathogenic bacteria.It is mainly used for cosmetics,leather preservation,widely used in water treatment, pharmaceutical, pesticides, cosmetics, detergent and other industries as preservatives and sterilizing agents, by the nitro-methane and formaldehyde , bromine reaction derived.Invested in the reactor measured nitro-methane, formaldehyde, water and ethanol, 40% liquid caustic soda was added dropwise under cooling at this time there is solid precipitation, and then dropping quantitative bromine, plus completion of mixing, vacuum steam out of part of the water and ethanol, after cooling, crystallization, filtration, drying advanced Bronopol, the yield of above 70%, content is about 93%.

 Bronopol (CAS NO.52-51-7) is a highly-toxic pesticide,burning will produce bromide and nitrogen oxides emitted toxic fumes.Besides should be stored and transported in low-temperature,drying environment. separately with oxidizing agents.Fire extinguishing agents water, carbon dioxide, dry powder, foam would be used if emergency.