Phosphoric acid
SIAL/PHR3222 - certified reference material, pharmaceutical secondary standard
Synonym: Orthophosphoric acid
CAS Number: 7664-38-2
Empirical Formula (Hill Notation): H3O4P
Molecular Weight: 98.00
MDL Number: MFCD00011340
Linear Formula: H3PO4
Product Type: Chemical
agency | traceable to USP 1535802 |
bp | 158 °C (lit.) |
density | 1.685 g/mL at 25 °C (lit.) |
grade | certified reference material |
pharmaceutical secondary standard | |
InChI | 1S/H3O4P/c1-5(2,3)4/h(H3, |
InChI key | NBIIXXVUZAFLBC-UHFFFAOYSA |
mp | ~40 °C (lit.) |
packaging | pkg of 1.5 mL |
Quality Level | 300 ![]() |
SMILES string | OP(O)(O)=O |
storage temp. | 2-30°C |
vapor density | 3.4 (vs air) |
vapor pressure | 2.2 mmHg ( 20 °C) |
5 mmHg ( 25 °C) |
Analysis Note: | These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available. |
Footnote: | To see an example of a Certificate of Analysis for this material enter LRAA6959(changes by product) in the Documents slot below. This is an example certificate only and may not be the lot that you receive. |
General description: | Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards |
Other Notes: | Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous). |
Other Notes: | This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis. |
bp | 158 °C (lit.) |
mp | ~40 °C (lit.) |
Density | 1.685 g/mL at 25 °C (lit.) |
Storage Temp. | 2-30°C |