grade

ACS reagent

Quality Level

300

product line

EMSURE^®

Assay

≥99.5% (acidimetric)

form

solid

autoignition temp.

470 °C

potency

2260 mg/kg LD₅₀, oral (Rat)

impurities

≤0.001% Nitrogen compounds (as N)
≤0.5% Water (Karl Fischer)
≤200 ppm Sulfated ash (600 °C)
≤50 ppm In water insoluble matter
≤5000 ppm Fumaric acid (HPLC)

pH

2.7 (20 °C, 10 g/L in H₂O)

bp

235 °C (lit.)
235 °C/1013 hPa

mp

184-186 °C (lit.)

transition temp

flash point 206 °C

solubility

58 g/L

density

1.56 g/cm³ at 20 °C

bulk density

940 kg/m³

anion traces

chloride (Cl^-): ≤5 ppm
phosphate (PO₄^3-): ≤0.001%
sulfate (SO₄^2-): ≤30 ppm

cation traces

Fe: ≤5 ppm
heavy metals (as Pb): ≤5 ppm

storage temp.

15-25°C

SMILES string

OC(=O)CCC(O)=O

InChI

1S/C4H6O4/c5-3(6)1-2-4(7)8/h1-2H2,(H,5,6)(H,7,8)

InChI key

KDYFGRWQOYBRFD-UHFFFAOYSA-N