性状  白色无定形粉末。有祘的气味，有毒。不纯品为黄色粉末。极易吸湿，360℃升华，不燃烧。能溶于水产生小量热并生成磷酸，对乙醇的反应与水相似。可局部刺激皮肤、粘膜和眼睛等。有腐蚀性。
密度:2.30
熔点:340℃
   
备注:  以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。
质量标准  
   项目                                  化学纯        分析纯     
                                       (CP)         (AR)     
含量Assay                             ≥98%        ≥98.5% 
活性R值                                1.2           1.7       
还原物(以P2O3计)%                     ≤0.01       ≤0.008 
澄清度试验                            合格          合格     
水不溶物%                             ≤0.02       ≤0.01   
总氮量(N)%                            ≤0.01       ≤0.002   
重金属以(Pb计)%                       ≤0.01       ≤0.002   
铁含量(Fe)%                           ≤0.01       ≤0.002   
砷含量(As)%                           ≤0.01       ≤0.007

品级Grade                            ACS级, ≥98.0% 
                                    (powder, ACS, ≥98.0%)
外观Appearance                        White to Off-White Powder
X-射线衍射分析X-Ray Diffraction       Conforms to Structure
纯度Purity (Titration by NAOH)        ≥98.0 %
不溶物Insoluble matter                ≤0.02 %
杂项检测Miscellaneous Assay           Pass
P2O3
铵Ammonia (NH4)                       ≤0.01 %
重金属Heavy Metal                     ≤0.01 %
(as Pb)

99.99% metals basis:

外观Appearance                          White Powder or Granular Powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP:                                    Confirms Phosphorus Component Confirmed
纯度Purity (Titration by NaOH)          98.0～102%
不溶物Insoluble matter                  ≤0.02 %
                                        C = 12.5%; H2O
重金属Heavy Metal (as Lead)             ≤0.01 %
铵Ammonia (NH4)                         ≤0.01 %
三氧化磷Phosphorus Trioxide             Pass
痕量金属分析total metallic impurities   ≤100ppm by ICP Atomic emission
(As、Na、As、Mg、Ca、Mn、Co、Na、Cr、Ni、Cu、Pb、Fe、Zn）

99.9995% metals basis，电子级：

外观Appearance                          White Powder or Granular Powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.999% Based on Trace Metals Impurities of ICP
ICP:                                    Confirms Phosphorus Component Confirmed
纯度Purity (Titration by NaOH)          98.0～102%
不溶物Insoluble matter                  ≤0.01 %
                                        C = 12.5%; H2O
重金属Heavy Metal (as Lead)             ≤0.005 %
铵Ammonia (NH4)                         ≤0.005%
三氧化磷Phosphorus Trioxide             Pass
痕量金属分析total metallic impurities   ≤10ppm by ICP Atomic emission
(As、Na、As、Mg、Ca、Mn、Co、Na、Cr、Ni、Cu、Pb、Fe、Zn）

贮存  极易吸潮，密封充氩保存。
用途  干燥剂及脱水剂。有机合成缩合剂。
高纯级用于拉制光纤预制棒的掺杂剂，集成电路制造的N型掺杂剂，合成光学晶体。
联合国编号  1807
Risk：  R35-
Safety :  S22- S26 - S45-
Hazard :  C -