1.00546
meta-Phosphoric acid
pieces for analysis (stabilized with sodium metaphosphate) EMSURE®
别名:
Metaphosphoric acid, m-Phosphoric acid
vapor pressure
<0.001 hPa ( 20 °C)
product line
EMSURE®
form
solid
composition
HPO<SUB>3</SUB>, 40-50% acidimetric , NaPO<SUB>3</SUB>, 50-60% acidimetric
Quality Level
concentration
40-50%
impurities
≤1 ppm As (Arsenic), ≤10 ppm Cd (Cadmium), ≤10 ppm Chloride (Cl), ≤10 ppm Cu (Copper), ≤10 ppm Ni (Nickel), ≤10 ppm Pb (Lead), ≤10 ppm Zn (Zinc), ≤100 ppm Reducing matter (as H3PO3), ≤5 ppm Co (Cobalt), ≤5 ppm Mn (Manganese), ≤5 ppm Nitrate (NO3), ≤50 ppm Fe (Iron)
pH
2 (20 °C, 33 g/L in H2O)
bp
600 °C/1013 hPa
mp
200-250 °C
solubility
water: soluble (Hydrolysis)
density
2.0 g/cm3 at 20 °C
bulk density
1000 kg/m3
storage temp.
2-30°C
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Application
- Impact of pH and application time of meta-phosphoric acid on resin-enamel and resin-dentin bonding.: This study examines the effects of varying pH levels and application durations of meta-phosphoric acid on the bonding properties between resin and dental tissues. Meta-phosphoric acid demonstrates varying efficacy in enhancing adhesive characteristics, crucial for dental restorations (Cardenas AFM et al., 2018).
- Dicalcium phosphate (CaHPO4·2H2O) precipitation through ortho- or meta-phosphoric acid-etching: effects on the durability and nanoleakage/ultra-morphology of resin-dentine interfaces.: This publication explores how ortho- and meta-phosphoric acid etching influences the precipitation of dicalcium phosphate in dental applications, particularly focusing on its impact on the durability of resin-dentine interfaces and potential implications for dental repair longevity (Feitosa VP et al., 2013).
- Simultaneous determination of ascorbic acid, aminothiols, and methionine in biological matrices using ion-pairing RP-HPLC coupled with electrochemical detector.: This study details a method leveraging reverse-phase high-performance liquid chromatography to analyze ascorbic acid alongside other compounds, with meta-phosphoric acid used to stabilize the samples during the analytical process, highlighting its application in precise biochemical measurements (Khan MI et al., 2011).
- Extraction, chemical characterization and biological activity determination of broccoli health promoting compounds.: This research utilized meta-phosphoric acid in the extraction processes for analyzing the chemical properties and biological activities of health-promoting compounds in broccoli, demonstrating the acid′s utility in food science and nutritional analysis (Ares AM et al., 2013).
Analysis Note
Assay (acidimetric, HPO₃): 40 - 50 %
Assay (acidimetric, NaPO₃): 50 - 60 %
Identity: passes test
Chloride (Cl): ≤ 10 ppm
Nitrate (NO₃): ≤ 5 ppm
Reducing matter (as H₃PO₃): ≤ 100 ppm
As (Arsenic): ≤ 1 ppm
Cd (Cadmium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Cu (Copper): ≤ 10 ppm
Fe (Iron): ≤ 50 ppm
Mn (Manganese): ≤ 5 ppm
Ni (Nickel): ≤ 10 ppm
Pb (Lead): ≤ 10 ppm
Zn (Zinc): ≤ 10 ppm
Assay (acidimetric, NaPO₃): 50 - 60 %
Identity: passes test
Chloride (Cl): ≤ 10 ppm
Nitrate (NO₃): ≤ 5 ppm
Reducing matter (as H₃PO₃): ≤ 100 ppm
As (Arsenic): ≤ 1 ppm
Cd (Cadmium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Cu (Copper): ≤ 10 ppm
Fe (Iron): ≤ 50 ppm
Mn (Manganese): ≤ 5 ppm
Ni (Nickel): ≤ 10 ppm
Pb (Lead): ≤ 10 ppm
Zn (Zinc): ≤ 10 ppm
Legal Information
EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1
存储类别
8B - Non-combustible, corrosive hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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