一、化學(xué)名稱:磷酸二氫鈉
二、分子式:NaH2PO4;NaH2PO4·H2O;NaH2PO4·2H2O
三、分子量:無水物:120.01;一水物:138.01;二水物:156.01
四、CAS:無水物:7558-80-7;一水物:10049-21-5;二水物:13472-35-0
五、性狀:無色結(jié)晶或白色結(jié)晶性粉末。無臭。稍有潮解性。相對(duì)密度2.04。熔點(diǎn)60℃。易溶于水。不溶于乙醇。100℃以下加熱,可溶于結(jié)晶水形成一水鹽。加熱至100℃失去結(jié)晶水而成無水物,繼續(xù)加熱則變?yōu)槠姿徕c。
六、用途:緩沖劑、品質(zhì)改良劑、乳化劑、營養(yǎng)增補(bǔ)劑、抗氧化增效劑、鹽水穿透助劑、糖澄清劑、穩(wěn)定劑、凝膠劑、禽類燙毛劑。
七、包裝: 內(nèi)襯聚乙烯塑料袋,外套復(fù)合塑料編織袋包裝,每袋凈重25kg。
八、貯存與運(yùn)輸:本品應(yīng)貯存在干燥通風(fēng)清潔的庫房中,裝載運(yùn)輸時(shí)要輕裝輕放,防止包裝破損,防止受潮、受熱,運(yùn)輸過程中防止雨淋受潮,應(yīng)與有毒物品隔離。
質(zhì)量指標(biāo) | Specification |
| FCC VII |
含量(以干基計(jì)),w/% | Content (On Dry Basis),w/% | 98.0-103.0 | 98-103.0 |
PH(10g/L溶液,25℃) | PH(10g/L,25℃) | 4.1-4.7 | ———— |
水不溶物,w/% ≤ | Insoluble Substances,w/% ≤ | 0.2 | 0.2 |
重金屬(以Pb計(jì)),mg/kg ≤ | Heavy Metal(As Pb),mg/kg ≤ | 10 | ———— |
鉛(Pb),mg/kg ≤ | Lead(Pb),mg/kg ≤ | 4 | 4 |
砷(As),mg/kg ≤ | Arsenic(As),mg/kg ≤ | 3 | 3 |
氟化物(以F計(jì)),mg/kg ≤ | Fluorides (As F),mg/kg ≤ | 50 | 50 |
干燥失重,w/% | NaH2PO4 ≤ | Loss On Drying,w/% | NaH2PO4 ≤ | 2.0 | 2.0 |
NaH2PO4·H2O | NaH2PO4·H2O | 10.0-15.0 | 10.0-15.0 |
NaH2PO4·2H2O | NaH2PO4·2H2O | 20.0-25.0 | 20.0-25.0 |
1、Chemical Name: Monosodium Phosphate
2、Molecular Formula: NaH2PO4 ; NaH2PO4·H2O ; NaH2PO4·2H2O
3、Molecular Weight: Anhydrous:120.01 ; Monohydrate:138.01 ; Dihydrate:156.01
4、CAS: Anhydrous:7558-80-7 ; Monohydrate:10049-21-5 ; Dihydrate:13472-35-0
5、Character: It is colorless column crystal, odorless, slightly deliquescence. The relative density is 2.04 and
melting point is 60℃. It is easily soluble in water but insoluble in ethanol. If heated below 100℃, it can
dissolve in its’ own crystal water and convert to monohydrate salt. When heated up to 100℃, it’ll lose
crystal water and change to anhydrous substances, which will become Sodium Metaphosphate if it
continues to be heated.
6、Usage: In food industry, it is used as buffering, character improving agent, emulsifier, nutrition supplement, antioxidant additive, brine penetrable agent, sugar clarifier, stabilizer, coagulant and fowl scalding agent.
7、Packing: It is packed with polyethylene bag as inner layer and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
關(guān)鍵字: 磷酸二氫鈉;磷酸二氫鈉價(jià)格;磷酸二氫鈉廠家;科倫多磷酸二氫鈉;食品級(jí)磷酸二氫鈉;
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