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一、化學名：多(duo)聚磷(lin)酸鉀，偏磷(lin)酸鉀
二、分子式：KPO3
三、分子量(liang)：118.07
四(si)、CAS：7790-53-6
五、性狀：無色或白色玻(bo)璃(li)狀物，呈碎片(pian)狀結晶(jing)或為白色粉(fen)(fen)末。無臭。吸(xi)濕(shi)性強(qiang)。隨著聚合(he)度的(de)增大(da)，逐漸(jian)成為透明的(de)玻(bo)璃(li)狀，吸(xi)濕(shi)性也隨之增大(da)。具有提高淀粉(fen)(fen)分散性的(de)能力，與水溶液中的(de)金屬離子(zi)有螯合(he)作用。
六、用(yong)(yong)途：在食品(pin)工業中(zhong)作(zuo)乳(ru)化(hua)劑(ji)、保濕劑(ji)、螯合(he)劑(ji)、穩定劑(ji)、組織(zhi)改進劑(ji)、粘結劑(ji)、護色劑(ji)、抗氧劑(ji)、防(fang)腐劑(ji)。可以用(yong)(yong)于肉類制(zhi)品(pin)、干酪(lao)和淡(dan)煉乳(ru)。
七、包(bao)裝：內襯聚乙烯塑料(liao)袋，外套復(fu)合塑料(liao)編(bian)織(zhi)袋包(bao)裝，每袋凈重25kg。
八、貯存(cun)與運(yun)輸(shu)：本品(pin)應(ying)(ying)貯存(cun)在(zai)干燥通風(feng)清潔的庫房中(zhong)，裝載(zai)運(yun)輸(shu)時要輕(qing)裝輕(qing)放，防(fang)止包裝破損，防(fang)止受(shou)(shou)潮、受(shou)(shou)熱，運(yun)輸(shu)過程中(zhong)防(fang)止雨(yu)淋受(shou)(shou)潮，應(ying)(ying)與有(you)毒物品(pin)隔離。
| 質量指標 | Specification | FCC VII | E452(ii) |
| 含量（以P2O5計），w/% | Content(as P2O5),w/% | 59.0-61.0 | 53.5-61.5 |
| 砷（As），mg/kg ≤ | Arsenic(As),mg/kg ≤ | 3 | 3 |
| 氟化物（以F計），mg/kg ≤ | Fluoride(as F),mg/kg ≤ | 10 | 10 |
| 重金屬（以Pb計），mg/kg ≤ | Heavy metal(as Pb),mg/kg ≤ | ———— | ———— |
| 水不溶物，w/% ≤ | Insoluble substances,w/% ≤ | ———— | ———— |
| 鉛（Pb），mg/kg ≤ | Lead(Pb),mg/kg ≤ | 2 | 4 |
| 汞（Hg），mg/kg ≤ | Mercury(Hg),mg/kg ≤ | ———— | 1 |
| 鎘（Cd），mg/kg ≤ | Cadmium(Cd),mg/kg ≤ | ———— | 1 |
| 灼燒減量，w/% ≤ | Loss on ignition,w/% ≤ | ———— | 2 |
| pH值（10g/L溶液） | pH value(10g/L Solution ) | ———— | Max 7.8 |
| P2O5，w/% ≤ | P2O5,w/% ≤ | ———— | 8 |
| 粘性 | Viscosity | 6.5-15cP | ———— |
1、Chemical Name: Potassium Metaphosphate
2、Molecular Formula: KPO3
3、Molecular Weight: 118.07
4、CAS: 7790-53-6
5、Character: Colorless or white glassy substance, fragmentary crystal or white powder. Odorless. Strong hygroscopicity. With the increase of the degree of polymerization, it gradually becomes transparent and glassy, and the hygroscopicity also increases. It can improve the dispersibility of starch and chelate with metal ions in aqueous solution.
6、Usage:In food industry, it is used as emulsifier, humectant, sequestrant, stabilizing agent, tissue improver, binder, stabilizer, color-protecting, antioxidants, preservatives.It is mainly used in meat products, cheese and evaporated milk.
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 & Transportation: 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.