1.06346

Sodium dihydrogen phosphate monohydrate

for analysis EMSURE^® ACS,Reag. Ph Eur

• Synonym(s): Sodium phosphate monobasic monohydrate, Monosodium phosphate, Sodium dihydrogen phosphate monohydrate
• Linear Formula: NaH₂PO₄ · H₂O
• CAS Number: 10049-21-5
• Molecular Weight: 137.99
• MDL number: MFCD00149208
• EC Index Number: 231-449-2

Properties

• grade: ACS reagent
• Quality Level: 200; 300
• Agency: reag. Ph. Eur.
• product line: EMSURE^®
• assay: 99.0-102.0% (alkalimetric)
• form: crystals
• potency: >2000 mg/kg LD₅₀, oral (Rat); >7940 mg/kg LD₅₀, skin (Rabbit)
• impurities: ≤0.01% Insoluble matter
• pH: 4.1-4.5 (25 °C, 50 g/L in H₂O)
• solubility: 850 g/L
• density: 2.04 g/cm³ at 20 °C
• bulk density: 880 kg/m³
• anion traces: chloride (Cl^-): ≤0.0005%; sulfate (SO₄^2-): ≤0.003%
• cation traces: Ca: ≤0.005%; Fe: ≤0.0005%; K: ≤0.005%; N: ≤0.001%; heavy metals: ≤0.0005%
• UV absorption: λ: 280 nm A_max: ≤0.05
• storage temp.: 2-30°C
• SMILES string: [Na+].[H]O[H].OP(O)([O-])=O
• InChI: 1S/Na.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+1;;/p-1
• InChI key: BBMHARZCALWXSL-UHFFFAOYSA-M

Description

Packaging

500 , 500 g

1 kg in Plastic bottle

12 kg in Bucket, plastic

25 , 50 kg in Fibre carton

Linkage

Replaces: SX0709; SX0709-5; SX0710; SX0710-1; SX0710-3; SX0710-5; SX0710-20

Analysis Note

Assay (alkalimetric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 4.1 - 4.5
UV absorption (280 nm; 1 mol/l; 1 cm; water): ≤ 0.05
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (ACS): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Corresponds to ACS,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable