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Merck

8.20475

3,4-Dihydroxybenzaldehyde

for synthesis

Synonym(s):

3,4-Dihydroxybenzaldehyde, Protocatechualdehyde

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About This Item

Linear Formula:
3,4-(OH)2C6H3CHO
CAS Number:
139-85-5
Molecular Weight:
138.12
MDL number:
MFCD00003370
UNSPSC Code:
12352114
EC Index Number:
205-377-7
NACRES:
NA.22

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Quality Level

200
300

Assay

≥98.0% (HPLC)

form

powder

mp

152-156 °C

storage temp.

2-30°C

SMILES string

Oc1c(ccc(c1)C=O)O

InChI

1S/C7H6O3/c8-4-5-1-2-6(9)7(10)3-5/h1-4,9-10H

InChI key

IBGBGRVKPALMCQ-UHFFFAOYSA-N

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This Item
8.045368.00640D108405
3,4-Dihydroxybenzaldehyde for synthesis

Sigma-Aldrich

8.20475

3,4-Dihydroxybenzaldehyde

4-Hydroxybenzaldehyde for synthesis

Sigma-Aldrich

8.04536

4-Hydroxybenzaldehyde

2-Hydroxybenzaldehyde for synthesis

Sigma-Aldrich

8.00640

2-Hydroxybenzaldehyde

3,4-Dihydroxybenzaldehyde 97%

Sigma-Aldrich

D108405

3,4-Dihydroxybenzaldehyde

assay

≥98.0% (HPLC)

assay

≥98% (HPLC)

assay

≥99% (GC)

assay

97%

Quality Level

200, 300

Quality Level

200

Quality Level

200

Quality Level

100

form

powder

form

powder

form

liquid

form

powder

mp

152-156 °C

mp

116 °C

mp

-7 °C

mp

150-157 °C (lit.)

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

-

Analysis Note

Assay (HPLC, area%): ≥ 98.0 % (a/a)
Melting range (lower value): ≥ 152 °C
Melting range (upper value): ≤ 156 °C
Identity (IR): passes test

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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