o-Tolidine, GR 99%+

Name: o-Tolidine, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-000665

About o-Tolidine, GR 99%+

Listed under CAS 119-93-7, o-Tolidine is a biological stain available from Vaqora Chemicals (AR grade), specified at 99% purity. Its molecular formula is C14H16N2 and its molecular weight is 212.29 g/mol. Its systematic (IUPAC) name is 4-(4-amino-3-methylphenyl)-2-methylaniline. It is also known as 3,3'-Dimethylbenzidine or 4,4'-Bianisidine.

The material typically appears as a grey powder. Key physical data: a melting point of 128-131 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and analytical determinations. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 25 g, 100 g and 1 kg packs, o-Tolidine is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Analytical determinations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	o-Tolidine, GR 99%+
Catalogue No.	VQ-000665
CAS Number	119-93-7
IUPAC name	4-(4-amino-3-methylphenyl)-2-methylaniline
Molecular formula	C₁₄H₁₆N₂
Molecular weight	212.29 g/mol
Exact mass	212.1313
Grade	AR
Purity / assay	99%
HSN code	29214330
InChIKey	NUIURNJTPRWVAP-UHFFFAOYSA-N
SMILES	CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)C)N
PubChem CID	8413

Physical properties
Physical form	Powder
Appearance	Grey powder
Melting point	128-131 °C
LogP (XLogP3)	2.3
H-bond donors / acceptors	2 / 2
TPSA	52 Å²
UN number	UN 3077
Synonyms	3,3'-Dimethylbenzidine, 4,4'-Bianisidine, Orthotolidine, Diaminoditolyl, 2-Tolidine, Bianisidine, Diaminotolyl, 4,4'-Bi-o-toluidine, 3,3'-Tolidine, Fast Dark Blue Base R, 3,3'-Dimethyl-4,4'-biphenyldiamine, 3,3'-Dimethyl-4,4'-diaminobiphenyl

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H350May cause cancer
H411Toxic to aquatic life with long lasting effects

Precautionary statements: P203, P264, P270, P273, P280, P301 + P317, P318, P330, P391, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 119-93-7

o-Tolidine

CAS: 119-93-7
Formula: C₁₄H₁₆N₂
MW: 212.29 g/mol

VQ-000662

Synthesis

o-Tolidine, 98%

CAS: 119-93-7
Formula: C₁₄H₁₆N₂
MW: 212.29 g/mol

VQ-000664

Frequently asked questions

What is the CAS number of o-Tolidine, GR 99%+?

The CAS Registry Number of o-Tolidine, GR 99%+ is 119-93-7. It is also known as 3,3'-Dimethylbenzidine, 4,4'-Bianisidine, Orthotolidine.

What is the molecular formula and molecular weight of o-Tolidine, GR 99%+?

o-Tolidine, GR 99%+ has the molecular formula C14H16N2 and a molecular weight of 212.29 g/mol. Its IUPAC name is 4-(4-amino-3-methylphenyl)-2-methylaniline.

Which grade and pack sizes of o-Tolidine, GR 99%+ can I order?

We supply o-Tolidine, GR 99%+ in AR (99%) grade, in 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with o-Tolidine, GR 99%+?

Yes. Every lot of o-Tolidine, GR 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can o-Tolidine, GR 99%+ be shipped internationally?

Yes. o-Tolidine, GR 99%+ is classified as hazardous (UN 3077), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.