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1.00132

Supelco

Barbituric acid

for analysis EMSURE®

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

Quality Level

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

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This Item
8.0013311709185698
Barbituric acid for analysis EMSURE®

Supelco

1.00132

Barbituric acid

Barbituric acid for synthesis

Sigma-Aldrich

8.00133

Barbituric acid

Barbituric acid for spectrophotometric det. of cyanide, ≥99.5%

Supelco

11709

Barbituric acid

Barbituric acid ReagentPlus®, 99%

Sigma-Aldrich

185698

Barbituric acid

form

solid

form

solid

form

solid

form

powder

pH

2-3 (60 °C, 50 g/L in H2O)

pH

2-3 (60 °C, 50 g/L in H2O)

pH

-

pH

-

mp

250-252 °C (decomposition)

mp

250-252 °C (decomposition)

mp

248-252 °C (dec.) (lit.)

mp

248-252 °C (dec.) (lit.)

solubility

11.45 g/L

solubility

11.45 g/L

solubility

-

solubility

-

anion traces

chloride (Cl-): ≤40 ppm

anion traces

-

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤500 mg/kg

anion traces

-

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

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


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