12501-23-4

• 常用中文名：磷钨酸水合物
• 常用英文名：Trioxotungsten-phosphoric acid hydrate (12:1:1)
• CAS号：12501-23-4
• 分子式：H₅O₄₁PW₁₂
• 分子量：2898.069
• 发布时间：2018-09-09 14:25:00
• 更新时间：2024-01-02 12:59:47
• 【用途一】
  用作生化试剂及色谱分析试剂
  【用途二】
  各种生物碱、含氮碱、酚、蛋白质、蛋白胨、氨基酸、脲酸、脲、血液和碳水化合物的试剂。生物染色。 （１）有机合成反应的催化剂，在国内主要取代环境污染严重的液体酸类，如硫酸、氢氟酸、三氯化铝等，在国外则是一种新型的固体酸催化剂而受到很多合成领域的关注； 　（２）生化试剂及色谱分析试剂：在药物的分离、鉴定、化学毒物的毒理学研究，法医学鉴定以及生物材料的分析中，广泛用作沉淀剂、氧化剂和显色剂，如分析阿托品、氨基比林，奎宁、普鲁卡因和可卡因等，利用薄层色谱法检出类固醇需用磷钨酸的乙醇溶液；通过生成磷钨酸的分析鉴定水果、蔬菜、植物和食品中的含磷杀虫剂。

名称

• 中文名: 磷钨酸水合物
• 英文名: Phosphotungstic acid hydrate
• 中文别名: 钨磷酸水合物; 12-钨磷酸水合物; 橙黄G6; 磷钨酸; 钨磷酸
• 英文别名: phosphoric acid,trioxotungsten,hydrate; Phosphotungstic acid; Tungstophosphoric acid; MFCD00149915; Tungsten, trioxo-, compd. with phosphoric acid, hydrate (12:1:1); Trioxotungsten - phosphoric acid hydrate (12:1:1); EINECS 235-087-6

物化性质

• 熔点: ~95 °C(lit.)
• 分子式: H₅O₄₁PW₁₂
• 分子量: 2898.069
• 精确质量: 2899.215088
• PSA: 711.32000
• 外观性状: 白色至灰白色粉末或晶体
• 储存条件:

  2-8°C密闭、阴凉干燥处

• 稳定性:

  常温常压下稳定

  避免光，明火，高温。

  极易溶于水［约85%（质量分数）］，也易溶于其他供电子有机溶剂，如丙酮、DMF等。水溶液中磷钨酸完全解离。用X射线技术和中子衍射法对三种磷钨酸的水合物（H3PW12O40·nH2O，n分别为6，21和29）进行研究，其中只有六水合物中的水分子可以定位，并发现质子以平面H5O+2离子形式存在。水溶液中PW12的稳定酸度范围是有限的，当pH为1.5～5时，将很快地转变为缺位的PW11阴离子。

• 水溶解性: soluble
• 分子结构:

  1、摩尔折射率：无可用的

  2、摩尔体积（cm³/mol）：无可用的

  3、等张比容（90.2K）：无可用的

  4、表面张力（dyne/cm）：无可用的

  5、介电常数：无可用的

  6、极化率（10^-24cm³）：无可用的

  7、单一同位素质量：2899.215186 Da

  8、标称质量：2900 Da

  9、平均质量：2898.0689 Da

• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:4

  3.氢键受体数量:41

  4.可旋转化学键数量:0

  5.互变异构体数量:无

  6.拓扑分子极性表面积693

  7.重原子数量:54

  8.表面电荷:0

  9.复杂度:112

  10.同位素原子数量:0

  11.确定原子立构中心数量:0

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:14

• 更多:

  1. 性状：带白色粉末

  2. 密度（g/mL,25℃）：未确定

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：~95

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC，0.05mmHg）：未确定

  7. 折射率：未确定

  8. 闪点（ºC）：未确定

  9. 比旋光度（º）：未确定

  10. 自燃点或引燃温度（ºC）：未确定

  11. 蒸气压（20ºC）：未确定

  12. 饱和蒸气压（kPa,60ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：溶于水

MSDS

SECTION 1: Identification of the substance/mixture and of the company/undertaking Product identifiers Product name: Phosphotungstic acid hydrate REACH No.: A registration number is not available for this substance as the substance or its uses are exempted from registration, the annual tonnage does not require a registration or the registration is envisaged for a later registration deadline. CAS-No.: 12501-23-4 Relevant identified uses of the substance or mixture and uses advised against Identified uses: Laboratory chemicals, Manufacture of substances SECTION 2: Hazards identification Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 Skin corrosion (Category 1B), H314 For the full text of the H-Statements mentioned in this Section, see Section 16. Classification according to EU Directives 67/548/EEC or 1999/45/EC C CorrosiveR34 For the full text of the R-phrases mentioned in this Section, see Section 16. Label elements Labelling according Regulation (EC) No 1272/2008 Pictogram Signal wordDanger Hazard statement(s) H314Causes severe skin burns and eye damage. Precautionary statement(s) P280Wear protective gloves/ protective clothing/ eye protection/ face protection. P305 + P351 + P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310Immediately call a POISON CENTER or doctor/ physician. Supplemental Hazardnone Statements Other hazards - none SECTION 3: Composition/information on ingredients Substances Synonyms: Tungstophosphoric acid Formula: H3O40PW12 · xH2O Molecular Weight: 2.880,05 g/mol CAS-No.: 12501-23-4 Hazardous ingredients according to Regulation (EC) No 1272/2008 ComponentClassificationConcentration Phosphotungstic acid hydrate CAS-No.12501-23-4Skin Corr. 1B; H314<= 100 % Hazardous ingredients according to Directive 1999/45/EC ComponentClassificationConcentration Phosphotungstic acid hydrate CAS-No.12501-23-4C, R34<= 100 % For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16 SECTION 4: First aid measures Description of first aid measures General advice Consult a physician. Show this safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Take off contaminated clothing and shoes immediately. Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Most important symptoms and effects, both acute and delayed The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11 Indication of any immediate medical attention and special treatment needed no data available SECTION 5: Firefighting measures Extinguishing media Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special hazards arising from the substance or mixture Oxides of phosphorus, Tungsten oxide Advice for firefighters Wear self contained breathing apparatus for fire fighting if necessary. Further information no data available SECTION 6: Accidental release measures Personal precautions, protective equipment and emergency procedures Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Environmental precautions Do not let product enter drains. Methods and materials for containment and cleaning up Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal. Reference to other sections For disposal see section 13. SECTION 7: Handling and storage Precautions for safe handling Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire protection. For precautions see section 2.2. Conditions for safe storage, including any incompatibilities Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Specific end use(s) Apart from the uses mentioned in section 1.2 no other specific uses are stipulated SECTION 8: Exposure controls/personal protection Control parameters Components with workplace control parameters Exposure controls Appropriate engineering controls Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Personal protective equipment Eye/face protection Face shield and safety glasses Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Full contact Material: Nitrile rubber Minimum layer thickness: 0,11 mm Break through time: 480 min Material tested:Dermatril® (KCL 740 / Z677272, Size M) Splash contact Material: Nitrile rubber Minimum layer thickness: 0,11 mm Break through time: 480 min Material tested:Dermatril® (KCL 740 / Z677272, Size M) data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, test method: EN374 If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario. Body Protection Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection Where risk assessment shows air-purifying respirators are appropriate use a full-face particle respirator type N100 (US) or type P3 (EN 143) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Control of environmental exposure Do not let product enter drains. SECTION 9: Physical and chemical properties Information on basic physical and chemical properties a) AppearanceForm: crystalline Colour: white b) Odourno data available c) Odour Thresholdno data available d) pHno data available e) Melting point/freezingMelting point/range: 95 °C - lit. point f) Initial boiling point and no data available boiling range g) Flash pointnot applicable h) Evapouration rateno data available i) Flammability (solid, gas) no data available j) Upper/lowerno data available flammability or explosive limits k) Vapour pressureno data available l) Vapour densityno data available m) Relative densityno data available n) Water solubilityno data available o) Partition coefficient: n- no data available octanol/water p) Auto-ignitionno data available temperature q) Decompositionno data available temperature r) Viscosityno data available s) Explosive propertiesno data available t) Oxidizing propertiesno data available Other safety information no data available SECTION 10: Stability and reactivity Reactivity no data available Chemical stability Stable under recommended storage conditions. Possibility of hazardous reactions no data available Conditions to avoid no data available Incompatible materials Strong oxidizing agents, Strong bases Hazardous decomposition products Other decomposition products - no data available In the event of fire: see section 5 SECTION 11: Toxicological information Information on toxicological effects Acute toxicity no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitisation no data available Germ cell mutagenicity no data available Carcinogenicity IARC:No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC. Reproductive toxicity no data available Specific target organ toxicity - single exposure no data available Specific target organ toxicity - repeated exposure no data available Aspiration hazard no data available Additional Information RTECS: Not available Cough, Shortness of breath, Headache, Nausea, Vomiting SECTION 12: Ecological information Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available Results of PBT and vPvB assessment PBT/vPvB assessment not available as chemical safety assessment not required/not conducted Other adverse effects no data available SECTION 13: Disposal considerations Waste treatment methods Product Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. Contaminated packaging Dispose of as unused product. SECTION 14: Transport information UN number ADR/RID: 3260IMDG: 3260IATA: 3260 UN proper shipping name ADR/RID: CORROSIVE SOLID, ACIDIC, INORGANIC, N.O.S. (Phosphotungstic acid hydrate) IMDG: CORROSIVE SOLID, ACIDIC, INORGANIC, N.O.S. (Phosphotungstic acid hydrate) IATA:Corrosive solid, acidic, inorganic, n.o.s. (Phosphotungstic acid hydrate) Transport hazard class(es) ADR/RID: 8IMDG: 8IATA: 8 Packaging group ADR/RID: IIIMDG: IIIATA: II Environmental hazards ADR/RID: noIMDG Marine pollutant: noIATA: no Special precautions for user no data available SECTION 15 - REGULATORY INFORMATION N/A SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

毒理学数据: 主要的刺激性影响： 在皮肤上面：可能引起发炎 在眼睛上面：可能引起发炎 致敏作用：没有已知的敏化现象 生态学数据: 通常对水体是稍微有害的，不要将未稀释或大量产品接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。

安全

• 符号: GHS05
• 信号词: Danger
• 危害声明: H314
• 警示性声明: P280-P305 + P351 + P338-P310
• 个人防护装备: Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
• 危害码 (欧洲): C:Corrosive;
• 风险声明 (欧洲): R34
• 安全声明 (欧洲): S26-S36/37/39-S45-S24/25
• 危险品运输编码: UN 3260 8/PG 3
• WGK德国: 3
• RTECS号: TH5650000
• 危险类别: 8.0
• 海关编码: 2811199090

制备

用酸化钨酸盐与磷酸盐的混合溶液、将粉状白钨酸直接溶于磷酸都能很方便地制得磷钨酸。

海关

海关编码	2811199090