Molekula
o-Tolidine dihydrochloride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
o-Tolidine dihydrochloride is a chemical used in analytical chemistry and as a reagent in dye and pharmaceutical synthesis. It appears as a crystalline powder and is highly sensitive to light and air. CAS: 612-82-8, Molecular Formula: C14H16N2•2HCl, Molecular Weight: 285.22 g/mol, Storage: Ambient, Signal Word: Danger. Molekula supplies o-Tolidine dihydrochloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to light brown |
| Melting Point | c.a. 300°C |
| Identification | Conforms to reference |
| Solubility | Clear colourless solution, 1% aq. |
| Assay | ≥ 95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 150 °C |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 30152913 |
| CAS Number | 612-82-8 |
| IUPAC Name | 4-(4-amino-3-methylphenyl)-2-methylaniline;dihydrochloride |
| EC Number | 210-322-5 |
| Molecular Formula | C14H16N2•2HCl |
| Molecular Weight | 285.22 |
| Exact Mass | 284.0847 |
| SMILES | CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)C)N.Cl.Cl |
| InChIKey | LUKPNZHXJRJBAN-UHFFFAOYSA-N |
| InChI | InChI=1S/C14H16N2.2ClH/c1-9-7-11(3-5-13(9)15)12-4-6-14(16)10(2)8-12;;/h3-8H,15-16H2,1-2H3;2*1H |
| PubChem CID | 108938 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29215130 |
| Tariff Code | 2921595090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H350 May cause cancer
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (1,1'Biphenyl)4,4'diamine, 3,3'dimethyl, hydrochloride (1:2)
- [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-, dihydrochloride
- 2,3'-Dimethylbiphenyl-4,4'-diamine dihydrochloride
- 3,3'-DIMETHYLBENZIDINE DIHYDROCHLORIDE
- 3,3'-Dimethylbenzidine.2HCl
- 4,4'-Diamino-3,3'-dimethylbiphenyl dihydrochloride
- 4,4'Biotoluidine dihydrochloride
- Benzidine, 3,3'dimethyl, dihydrochloride
- DMB dihydrochloride
- DMB2HCl
Frequently asked questions
What is o-Tolidine dihydrochloride used for?
It is primarily used as a reagent in analytical chemistry and as an intermediate in the synthesis of dyes and pigments.
What is the chemical formula and molecular weight of o-Tolidine dihydrochloride?
The formula is C14H16N2•2HCl with a molecular weight of 285.22 g/mol.
How should o-Tolidine dihydrochloride be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for o-Tolidine dihydrochloride?
Available in technical grade; custom grades may be available upon request.
Can Molekula supply o-Tolidine dihydrochloride in bulk?
Yes, bulk quantities are available; please contact our sales team for pricing and availability.
What documentation comes with an order of o-Tolidine dihydrochloride?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.