QUALITY: UP TO THE STANDARD HG2281–92

45% (20°C): 1.2 dose of water is necessary for dissolving away 1 dose of Rongalite at 20°C.
50% (70°C): 1 dose of water is necessary for dissolving away 1 dose of Rongalite at 70°C.

To be nominated for Rongalite is for the reason that it serves the color-discharging function to fabrics as well as its appearance. Under different cooling conditions, it solidifies out into white lumps.

Presenting a powerful reduction behavior, it acts as well as alkaline protection.

(a) Easy to deliquescent, emit heat, begin to decompose at 80°C, and sulfurated hydrogen H₂S being release:

6NaHSO₂•CH₂O+3H₂O---4NaHSO₃+2HCOONa + 2H₂S+HCOOH+3CH₃OH

(b) Decompose completely when the temperature rise to 110°C. the intermolecular formaldehyde splits out, and then nascent hydrogen which is possessed of the strongest reducing power are produced:

NaHSO₂• CH₂O --- NaHSO₂ + CH₂O
NaHSO₂• H₂O --- NaHSO₃ + 2(H)

(c) Under the influence of acidity, decompose at PH>3, emit H2S, so that it should be present in alkaline medium PH>8.

(d) Decompose on contacting oxidant, take I2 for example:

NaHSO₂• CH₂O + 2H₂O + 2l₂ --- NaHSO4 + 4HI+CN₂O
 

It is mainly used as a discharging agent, color-discharging agent, reluctant in printing and dyeing industry, as an activating agent for production styrene-butadise rubber and synthetic resin, also be used to decolorize and bleach some organic matters, for example : as a bleaching agent in synthetic rubber, sugar-making, and food industries. It may be substituted for the sodium hydrosulfite in some special conditions.

In Plastic bag-lined iron drum sealed with airtight lid, net weight 50 kg each. Powder and Granule form also available in double woven poly propylene bags.  

Should be stored in a cool, dark and dry place, protected, from moisture, avoided exposure to direct sunshine, don’t to let it be rained on. Be sure not to store it together with oxidant and acid, no presence of acidic vapor in storeroom, is allowed. Storage life is one year.

NOTICE : No representation or warranties, expressed or implied, of merchantability, fitness for a particular purpose, or any other nature are made hereunder with respect to the information contained herein or the product to which the information refers.