All Photos(1)

8.22312

Sigma-Aldrich

4-Aminobenzoic acid

for synthesis

Synonym(s):
4-Aminobenzoic acid, PABA
Empirical Formula (Hill Notation):
C7H7NO2
CAS Number:
Molecular Weight:
137.14
MDL number:
EC Index Number:
205-753-0

Quality Level

assay

≥99.0% (acidimetric)

potency

6000 mg/kg LD50, oral (Rat)

pH

3.5 (20 °C, 5 g/L in H2O)

mp

186-189 °C

density

1.38 g/cm3 at 20 °C

bulk density

200 kg/m3

storage temp.

2-30°C

InChI

1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)

InChI key

ALYNCZNDIQEVRV-UHFFFAOYSA-N

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Melting range (lower value): ≥ 185 °C
Melting range (upper value): ≤ 188 °C
Identity (IR): passes test

Hazard Statements

Precautionary Statements

Hazard Classifications

Aquatic Chronic 3

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

339.8 °F

Flash Point(C)

171 °C

Certificate of Analysis

Certificate of Origin

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