Model Number: HMHT0033-11
Other Name: SFS; Rongalite C; Sodium Formaldehyde Sulfoxylate
Hazard symbol: R36/37/38
Molecular formula: CH6Na2O5S
Flash point: 223.8 ℃
EINECS: 205-739-4
CAS: 6035-47-8
Physicochemical Properties
Stable under normal temperature and pressure, this product is white crystal. soluble in water. Insoluble in absolute ethanol, benzene. It has strong reducibility at high temperature. Has fading properties. Decomposition at high temperature produces toxic gases such as formaldehyde and hydrogen sulfide. In case of dilute acid, it decomposes, and its solution is neutral. Anhydrous melting point 63-64 ℃.
Technical Specifications
| EINECS | 205-739-4 |
| CAS | 6035-47-8 |
| Molecular formula | CH6Na2O5S |
| Molecular weight | 176.1 |
| Flash point | 223.8 ℃ |
| Application | Industrial bleach; reducing agent |
| Security description | S26; S36 |
| Hazard symbol | R36/37/38 |
| Hazard Description | Xi |
| Solubility | easily soluble in water, insoluble in absolute ethanol, and benzene. |
| Features | It has strong reducibility at high temperature. Has fading properties. |
| Temperature resistance | It decomposes at high temperature to produce toxic gases such as formaldehyde and hydrogen sulfide. |
| Acid resistance | it decomposes when it encounters dilute acid, and its solution is neutral. |
Packaging Types
25/50kg or as per customers' requirement
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Applications
Add 286 kg of zinc powder and 500 kg of water into the beating tank, and after pulping, add it into the tubular reactor, and absorb about 550 kg of SO2 to obtain zinc hydrosulfite.
In addition, the formaldehyde of 698 kg 40% is added in the reactor, the above-mentioned zinc hydrosulfite aqueous solution is dripped under stirring, and gradually heats up, when the temperature rises to 95-100 ℃, add a total of 257 kg of zinc powder in batches, react under the insulation After several hours, when the content of unreacted substance is less than 1% at the end point, it is allowed to stand for precipitation, and the precipitation is transferred to the replacement kettle. After washing with clean water, add 755kg of 42% sodium hydroxide solution with stirring, react at 65°C until the free base content reaches 03%-0.5%, filter the reactant to remove impurities, and concentrate the filtrate in vacuo after clarification for 48 hours. Cool to crystallize and pulverize to get the finished product.
Wuxi High Mountain Hi-tech Development Co., Ltd is a professional industrial company engaged in special
chemical production, technology research & development, and import & export. The company focuses on the
production, trade, and research & development of various chemical products.
Since its establishment, the company has been concentrating on constructing an international marketing
network and optimizing supply chain management, where we have established a long-term strategic
cooperation relationship with numerous large enterprises at home and abroad.
Relying on our wide business channels and professional experience, we are more skillfully
providing products of stable but differentiated quality, along with flexible, highly efficient & considerate
service to satisfy our partner at more competitive pricing.
In line with the principle of sharing the preferential cost and joint development, the company has formed
an interesting community for years with its customers at home and abroad. Sincerely to build up a pleasant
mutual trust, cooperative, win-win, and value-added sustainable partnership is what we are achieving to grow
together with you!
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Our products are sold all over the world, you can rest assured.
