1.00132

Barbituric acid

for analysis EMSURE^®

• Synonym(s): Barbituric acid, 2,4,6-Trihydroxypyrimidine, N,N′-Malonylurea
• Empirical Formula (Hill Notation): C₄H₄N₂O₃
• CAS Number: 67-52-7
• Molecular Weight: 128.09
• MDL number: MFCD00006666
• UNSPSC Code: 12352115
• EC Index Number: 200-658-0

Properties

• Quality Level: 300
• product line: EMSURE^®
• Assay: ≥99% (acidimetric)
• form: solid
• potency: >5000 mg/kg LD₅₀, oral (Rat)
• sulfated ash: ≤0.1%
• loss: ≤0.1% loss on drying, 105°C
• pH: 2-3 (60 °C, 50 g/L in H₂O)
• mp: 250-252 °C (decomposition)
• solubility: 11.45 g/L
• bulk density: 720 kg/m³
• anion traces: chloride (Cl^-): ≤40 ppm
• cation traces: Fe: ≤10 ppm; heavy metals (as Pb): ≤50 ppm
• storage temp.: 15-25°C
• InChI: 1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9)
• InChI key: HNYOPLTXPVRDBG-UHFFFAOYSA-N

Description

Linkage

Replaces: BX0035; BX0035-3

Analysis Note

Assay (acidimetric): ≥ 99
Identity (IR-spectrum): passes test
Chloride (Cl): ≤ 40 ppm
Heavy metals (as Pb): ≤ 50 ppm
Fe (Iron): ≤ 10 ppm
Sulfated ash: ≤ 0.1 %
Loss on Drying (105°C): ≤ 0.1 %
Suitability as reagent (for cyanide determination): passes test

Legal Information

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): 302.0 °F - closed cup
• Flash Point(C): 150.00 °C - closed cup