工业磷酸
Industrial phosphoric acid
分子式：H3PO4
Molecular formula：H3PO4
分子量：97.99
Molecular weight：97.99
特 性：无色透明的粘稠状液体，无臭，味很酸，比重1.70，相对密度1.834，熔点42.35℃，溶于水并放热，加热至300℃便失水成焦磷酸和偏磷酸，长时间受冷即生成结晶，有腐蚀性，易吸湿，密封保存。
Physical and Chemical property：It is the colorless, transPARent and syrupy liquid; odorless, taste sour. Specific gravity is 1.70, and the relative density is 1.834, melting point is 42.35℃. Soluble in water and release heat. It loses water when heat to 300℃ and converts to pyrophosphoric acid and metaphosphoric acid. It will become crystal after cooLED for a long time; causticity, Moisture - prone, kept in sealed container.
执行标准：工业级GB/T2091-2008；食品级GB3149-2004
Executive standard：tech grade GB/T2091-2008 ；food grade GB3149-2004
技术指标：
Technical indexes：
序号S/N
指标名称
Specifications 工业级指标
Index for tech grade 食品级指标
Index for food grade
1 磷酸（H3PO4），ω/%
Phosphoric acid（H3PO4） ≥85 75.0～86.0
2 氯化物（以CL计），ω/%
Chloride（as CL） ≤0.0005 ——
3 硫酸盐（以SO4计），ω/ %
Sulfate（as SO4） ≤0.003 ——
4 铁（Fe），ω/ %
Ferrum（as Fe） ≤0.002 ——
5 砷(As)，ω%
Arsenic(as As) ≤0.0001 ≤0.00005
6 重金属（以Pb计），ω/ %
Heavy metal（as Pb） ≤0.001 ≤0.0005
7 色度/黑曾
Chroma ≤20 ——
8 氟化物（以F计）ω/ %
fluoride —— ≤0.001
9 易氧化物（以H3PO3计），ω/ %
Easy oxidizable organic material —— ≤0.012
用途：工业级主要用于生产各种磷酸盐，金属表面磷化处理，配制电解抛光液和化学抛光液，并用作催化剂、干燥剂及清洗液，用于生产磷酸耐火泥，无机粘结剂，涂料工业用作金属防锈漆；食品级可用作酸味剂和酵母的营养剂，可用于调味料、罐头、清凉饮料的酸味剂，用于酿酒时的酵母营养源、防止杂菌繁殖。
Use：For tech grade, mainly used in producing varieties of phosphate, metal surface phosphate treatment, the preparation of electrolytic and chemical polishing liquid, and used as a catalyst, drying agent and cleaning fluid; used in producing phosphoric acid refractory clay, inorganic adhesives; used as a metal antirust paint in coatings industry. For food grade, available for sourness agent and yeast nutrient, can be used for seasoning, canned food, soft drinks of sour agent, used in the brewing asyeast nutrient source, preventing multiplication of mixed bacteria.

包装及贮存：聚乙烯塑料桶装，净重35kg，桶口必须加内盖和外盖严密封闭。
Packaging and Storage：Stored in polyethylene plastic drum, and sealed storing by Inside cover and outside cover.
Net weight : 35Kg.