Specifications: Rongalite lump,Rongalite powder, Rongalite granules are of a sort but in different forms,their chemical composition is all the same. Three types of Rongalite product are supplied to meet customer鈥檚 demands in application. 1.Properties: Chemical Name : Sodium Formaldehyde Sulfoxylate Commercial Name : Rongalite Molecular Formula : NaHSO2路CH2O路2H2O Molecular Weight : 154.12 Specific Gravity :1.8 Melting Point : 64鈩僜r Heat of Fusion :54.84 KJ/mol( 13.2Kcal/mol) Hygroscopic Point : Relative Humidity 60% Stable Pour-Point :50鈩?max Solubility: 45%(20 鈩?:1.2 dose of water is necessary for dissolving away 1 dose of Rongalite at 20鈩? 50%(70 鈩?:1 dose of water is necessary for dissolving avay 1 dose of Rongalite at 70鈩? Physical Properties: To be nominated for Rongalite is for the reason that it serves the color-discharging functionto fabrics as well as its appearance. Under different cooling conditions, it solidfies out into white lumps, powder, or granules. Chemical Properties: Presenting a powerful reduction behaviour, it acts as a salt of alkaline protection. a. Easy to deliquescent, emit heat, begin to decompose at 80鈩? and sulfurated hydrogen H2S being release: 銆?NaHSO2路CH2O+3H2O 鈥?鈫?NaHSO3+2HCOONa+2H2S+HCOOH+3CH3OH b.Decompose completely when the temperature rises to 110鈩? the intramolecular formaldehyde are splitted out, and then nascent hydrogen which is possessed of the strongest reducing power are produced : 銆?aHSO2路CH2O 鈥斺啋 NaHSO2+ CH2O 銆?aHSO2 + H2O 鈥斺啋 NaHSO2+ 2[H] c.Under the influence of acidity, decompose at PH >3, emit H2S, so that it sould be present in alkline medium PH >8. d.Decompose on contacting oxidant, take I2 for example: 銆?aHSO2路CH2O+2H2O+2I2 鈥斺啋 NaHSO4+4HI+CH2O 2. Standard: up to the Standard HG 228I-1992 Specifications: Name 鎸?鏍? Content of NaHSO2路CH2O 锛?鈮?98.0 State of solubleness Water solution clear or microturbid Sulphide No presence of black color is allowed Smell No smell or a little smell of leek 3. Packing: In plastic bag-lined iron drum sealed with airtight lid. Net weight: 50kg each. 4. Purpose: It is mainly used as a discharging agent, color-discharging agent, reductant in printing and dyeing industry, as an activating agent for production styrene-butadise rubber and synthetic resin, also be used to decolourize 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. 5. Attention: Should be stored in a dry, cool and dark place, protected, from moisture, avoided exposure to direct sunshine, don鈥檛 to let it be rained on. Be sure not to store it together with oxidant and acid, no presence of acidic vapour in storeroom is allowed. Storage life is one year.