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VAQORAo-Tolidine hydrochoride, GR 99%+
Synonyms: 3,3'-Dimethylbenzidine dihydrochloride · 4,4'-Bianisidine dihydrochloride · 4,4'-Diamino-3,3'-dimethylbiphenyl dihydrochloride · o-Tolidine dihydrochloride
CAS No.612-82-8
FormulaC14H18Cl2N2
Mol. weight285.20
Catalogue No.VQ-000663
Purity≥99%
HSN29214330
o-Tolidine hydrochoride (CAS 612-82-8) – biological stain, AR grade, ≥99%. C14H18Cl2N2, MW 285.2. From Vaqora Chemicals, with COA and worldwide delivery.
Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing
About o-Tolidine hydrochoride, GR 99%+
Listed under CAS 612-82-8, o-Tolidine hydrochoride is a biological stain available from Vaqora Chemicals in AR grade with a typical assay of ≥99%. With the molecular formula C14H18Cl2N2, it has a molar mass of 285.2 g/mol. The IUPAC name is 4-(4-amino-3-methylphenyl)-2-methylaniline. Dihydrochloride. Alternative names: 3,3'-Dimethylbenzidine dihydrochloride and 4,4'-Bianisidine dihydrochloride.
The material typically appears as white to grey to red powder or crystals. Its solubility is described as soluble (water). Keep the container tightly sealed and store it in a cool, dry area. 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 and clinical laboratories. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.
Vaqora Chemicals supplies o-Tolidine hydrochoride in 25 g, 100 g and 1 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.
Typical applications
- Histology & cytology staining
- Microscopy
- Clinical laboratories
Industries
Grade guides
Specifications & identifiers
| Product name | o-Tolidine hydrochoride, GR 99%+ |
|---|---|
| Catalogue No. | VQ-000663 |
| CAS Number | 612-82-8 |
| IUPAC name | 4-(4-amino-3-methylphenyl)-2-methylaniline;dihydrochloride |
| Molecular formula | C14H18Cl2N2 |
| Molecular weight | 285.2 g/mol |
| Exact mass | 284.0847 |
| Grade | AR |
| Purity / assay | ≥99% |
| HSN code | 29214330 |
| InChIKey | LUKPNZHXJRJBAN-UHFFFAOYSA-N |
| SMILES | CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)C)N.Cl.Cl |
| PubChem CID | 108938 |
| Physical form | Crystalline |
|---|---|
| Appearance | White to grey to red powder or crystals |
| Solubility | Soluble (water) |
| H-bond donors / acceptors | 4 / 2 |
| TPSA | 52 Ų |
| UN number | UN 3077 |
| Synonyms | 3,3'-Dimethylbenzidine dihydrochloride, 4,4'-Bianisidine dihydrochloride, 4,4'-Diamino-3,3'-dimethylbiphenyl dihydrochloride, o-Tolidine dihydrochloride, [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-, dihydrochloride, (1,1'-Biphenyl)-4,4'-diamine, 3,3'-dimethyl-, dihydrochloride, 2,3'-Dimethylbiphenyl-4,4'-diamine dihydrochloride, DMB2HCl, oTolidine dihydrochloride, 4,4'Biotoluidine dihydrochloride, Benzidine, 3,3'dimethyl, dihydrochloride, 4,4'Diamino3,3'dimethylbiphenyl dihydrochloride |
Safety & hazard information (GHS)
Signal word: Danger
Hazard statements
H302Harmful if swallowedH350May cause cancerH411Toxic 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
Frequently asked questions
What is the CAS number of o-Tolidine hydrochoride, GR 99%+?
The CAS Registry Number of o-Tolidine hydrochoride, GR 99%+ is 612-82-8. It is also known as 3,3'-Dimethylbenzidine dihydrochloride, 4,4'-Bianisidine dihydrochloride, 4,4'-Diamino-3,3'-dimethylbiphenyl dihydrochloride.
What is the molecular formula and molecular weight of o-Tolidine hydrochoride, GR 99%+?
o-Tolidine hydrochoride, GR 99%+ has the molecular formula C14H18Cl2N2 and a molecular weight of 285.2 g/mol.
Which grade and pack sizes of o-Tolidine hydrochoride, GR 99%+ can I order?
We supply o-Tolidine hydrochoride, 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 hydrochoride, GR 99%+?
Yes. Every lot of o-Tolidine hydrochoride, 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 hydrochoride, GR 99%+ be shipped internationally?
Yes. o-Tolidine hydrochoride, 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.
Enquire about o-Tolidine hydrochoride, GR 99%+
We reply within one business day with price, pack options, lead time and documentation.
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