Skip to Content
MilliporeSigma
All Photos(3)

Key Documents

87750

Sigma-Aldrich

3,3′,5,5′-Tetramethylbenzidine dihydrochloride hydrate

≥98.0% (calc. on dry substance, AT), chromogenic, powder

Synonym(s):

TMB dihydrochloride

Sign Into View Organizational & Contract Pricing

Select a Size

1 G
$91.50
5 G
$508.00
25 G
$1,900.00

$91.50


Estimated to ship onJune 18, 2025Details



Select a Size

Change View
1 G
$91.50
5 G
$508.00
25 G
$1,900.00

About This Item

Linear Formula:
[-C6H2(CH3)2-4-NH2]2·2HCl·xH2O
CAS Number:
Molecular Weight:
313.27 (anhydrous basis)
MDL number:
UNSPSC Code:
12352204
PubChem Substance ID:
NACRES:
NA.83

$91.50


Estimated to ship onJune 18, 2025Details


Product Name

3,3′,5,5′-Tetramethylbenzidine dihydrochloride hydrate, ≥98.0% (calc. on dry substance, AT)

Quality Level

assay

≥98.0% (calc. on dry substance, AT)

form

powder

impurities

≤6% water

solubility

acetic acid: water (1:2): soluble 0.1 g/5mL (hot)

storage temp.

2-8°C

SMILES string

O.Cl.Cl.Cc1cc(cc(C)c1N)-c2cc(C)c(N)c(C)c2

InChI

1S/C16H20N2.2ClH.H2O/c1-9-5-13(6-10(2)15(9)17)14-7-11(3)16(18)12(4)8-14;;;/h5-8H,17-18H2,1-4H3;2*1H;1H2

InChI key

KVCWTKDFVVSVSJ-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
T8768861510T2885
assay

≥98.0% (calc. on dry substance, AT)

assay

≥98%

assay

97%

assay

≥98% (TLC)

solubility

acetic acid: water (1:2): soluble 0.1 g/5mL (hot)

solubility

acetic acid: water (1:2): 20 mg/mL, clear to slightly hazy

solubility

-

solubility

ethyl acetate: 50 mg/mL, clear to very slightly hazy

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

form

powder

form

powder

form

powder

form

powder

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

impurities

≤6% water

impurities

-

impurities

-

impurities

-

Application

Noncarcinogenic substitute for benzidine.

pictograms

Health hazardExclamation mark

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 4 - Carc. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Questions

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service