柠檬酸二氢钠（柠檬酸一钠）Sodium Dihydrogen Citrate/ Monosodium Citrate Anhydrous
呈白色颗粒晶体或结晶性粉末，味碱，微酸，无臭。高于310℃时分解。在潮湿空气中轻微潮解。易溶于水，几乎不溶于乙醇。 可加热到200度发热发气量为每克约100ml.
食品工业中作酸度调节剂，用作缓冲剂，螯合剂；抗氧化增塑剂，乳化盐；洗涤工业中作清洗剂；橡塑 行业中作塑料填充剂和发泡剂，饮料中作二氧化碳保持剂。
无水一钠是一种与OBSH性能差不多的发泡剂配方。无水一钠在200℃硅油中反应放气量为110ml/g,普通AC发泡剂的放气量为220-250ml/g，无水一钠的放气量远远低于普通AC产品发气量，这使得它在汽车顶棚的皮革或者挤出成型橡塑中可以用到。
M.F:C6H7NaO7
W.F: 214.11
CAS:18996-35-5
Grade: Food
Product Description:
Monosodium citrate anhydrous is also named sodium dihydrogen citrate,monosodium citrate.It occurs as white crystalline powder with a slightly acidic taste,the PH value is 3.4-3.8 .It is freely soluble in water and practically insoluble in ethanol.Monosodium citrate anhydrous should be kept in airtight container in case the product is affected with damp.
Specifications:
Item
E331
QB
As Plastic foaming agent
Characters
white powder
white powder (its can be pass through 100 meshes )
Solubility
free soluble in water;practically insoluble in ethanol.
Identification
A. It gives the reaction of citrates B. It gives the reaction of sodium
Assay
99.0%-101.0%
≤99%
PH
3.4-3.8
Oxalate ppm
≤ 100
/
Chloride ppm
≤ 50
Sulfate ppm
≤ 150
Heavy metals ppm
≤ 5
Aresenic ppm
≤ 1
loss on drying
≤0.4% ( 105℃, 4 h)
≤0.4%
( 105℃, 4 h)
≤0.1%( 105℃, 4 h)
Gas release (ml/g)
≥100
Storage
preserve in well-closed containers.
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