商品名稱：亞硫酸氫鈉
化學名稱：亞硫酸氫鈉
分子式： NaHSO3
分子量： 104.06 ( 按 1961 年國際原子量 )
二、產(chǎn)品的理化性質(zhì)：
成品呈白色單斜晶體粉末。濕時帶有強烈的SO2 氣味，干燥后無其它氣味，相對密度1.48 極易溶于水，加熱時易分解，微溶于乙醇，水溶液呈酸性、還原性較強、在空氣中易被氧化或失去二氧化硫?qū)⒍趸蛲ㄈ霘溲趸c或碳酸鈉溶液而制得。
三、用途
亞硫酸氫鈉廣泛用于葡萄蔗糖漿、合成有機藥品、漂白稻草、用作除氯劑媒染劑與消色劑等。
四、質(zhì)量標準
1、外觀：亞硫酸氫鈉為白色晶體狀粉末。
2 、亞硫酸氫鈉符合下列要求： ( 雜質(zhì)量高含量標準以%計 )
|
指標名稱 |
指標 |
|
亞硫酸氫鈉含量≥ |
96.0 |
|
水不溶物 |
0.03 |
|
氯化物 (CI) |
0.01 |
|
鐵 (Fe) |
0.004 |
|
砷 (As) |
0.0002 |
|
鉛 屬 ( 以 pb 計 ) |
0.002 |
澄清度試驗合格
五、注意事項
產(chǎn)品露置空氣中極易被氧化、并不斷放出二氧化硫氣體，故本產(chǎn)品不易久存、不易露天存放、不可受潮，本產(chǎn)品加溫到高于 150 度則分解放出二氧化硫氣體，故不可與汽油及氧化劑等其它易燃物品混存和混運，本產(chǎn)品包裝為內(nèi)襯塑料袋外加一層編織袋，每袋凈重 50 公斤 。出口每袋凈重 25 公斤 。
A 、NAME OF PRODUCT ：
Commodity Name ： Sodium hydrogen sulfite
Chemical Name ： Sodium hydrogen sulfite
Molecular formula ： NaHSO 3
Molecular Weight ： 104.06 (in accordance with the 1961 International atomic weight).
B 、PHYSICAL AND CHEMICAL ROPERTIES OF PRODUCT ：
The product exists in form of white powder of monoclinic crystals with strong SO 2 smell when being wet, but without any other smell after it is dried. Its relative density is 1.48 . It is easy soluble in water and little soluble in ethanol. It disintegrates easily when being heated. Its water solution exhibits acidity with strong reducibility. It is easily oxidized in air or loses its sulfur dioxide. It is made by introducing sulfur dioxide into sodium hydroxide or sodium acid carbonate.
C 、APPLICATIONS ：
Sodium hydrogen sulfite is widely used in glucose syrup, composite organic medicines, bleaching straw, used as anticholor, dye mordant and color remover, etc.
D 、QUALITY STANDARD ：
1 、Appearance ： Sodium hydrogen sulfite grade one is white crystal powder.
2 、Sodium hydrogen sulfite meets the following requirements:
(Highest impurities are in %)
|
Name of parameter |
Parameter |
|
Content of sodium hydrogen sulfite ≥ |
96.0 |
|
Water insoluble material |
0.03 |
|
Chloride (CI) |
0.01 |
|
Iron (Fe) |
0.004 |
|
Arsenic (As) |
0.0002 |
|
Lead (in pb) |
0.002 |
E 、CAUTION ：
The product is very easy to be oxidized when exposed to air and emit sulfur dioxide continuously, so it is difficult to store the product for a long time in open air and it is necessary to protect the product from moisture. The product will disintegrate when heated above 150 ℃ and emit sulfur dioxide gas, so the product cannot be stored and transported together with gasoline, acids or oxidants and other inflammable substances. The product is packed in internal plastic bags with external braided bags in net weight of 50kg . Product for export is packed in net weight of 25kg .
