Molekula
2,5-Diaminobenzenesulfonic acid
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
2,5-Diaminobenzenesulfonic acid is an aromatic sulfonic acid with two amino groups, primarily used as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals, particularly for azo dye production. It appears as a white to off-white crystalline solid, soluble in water and polar solvents. Catalogue details: CAS 88-45-9, molecular formula (H2N)2C6H3SO3H, molecular weight 188.21 g/mol. Store at ambient conditions. Hazard classification: Danger (signal word). Molekula supplies 2,5-Diaminobenzenesulfonic acid 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White to grey to purple powder |
| Identification | Conforms to reference |
| Assay | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 41700179 |
| CAS Number | 88-45-9 |
| IUPAC Name | 2,5-diaminobenzenesulfonic acid |
| Molecular Formula | (H2N)2C6H3SO3H |
| Molecular Weight | 188.21 |
| Exact Mass | 188.0256 |
| SMILES | C1=CC(=C(C=C1N)S(=O)(=O)O)N |
| InChIKey | HEAHMJLHQCESBZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H8N2O3S/c7-4-1-2-5(8)6(3-4)12(9,10)11/h1-3H,7-8H2,(H,9,10,11) |
| PubChem CID | 66617 |
| UN Number | UN2583 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29215150 |
| Tariff Code | 2921511990 |
Safety & GHS
-
Corrosive
GHS05
-
Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H360FD May damage fertility. May damage the unborn child.
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- 1,4-diaminobenzene-2-sulfonic acid
- 1,4-diaminobenzene-6-sulphonic acid
- 1,4-Phenylenediamine-2-sulfonic Acid
- 2-Sulfo-p-phenylenediamine
- 2,5-Diaminobenzene-1-sulfonic acid
- Benzenesulfonic acid, 2,5-diamino-
- DIAMINOBENZENESULFONIC ACID, 2,5-
- P-PHENYLENEDIAMINE-2-SULFONIC ACID
- p-Phenylenediaminesulfonic acid
Frequently asked questions
What is 2,5-Diaminobenzenesulfonic acid commonly used for?
It is primarily used as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals, particularly for azo and reactive dyes. It is also used as a monomer for sulfonated polyimides.
What is the chemical formula and molecular weight of 2,5-Diaminobenzenesulfonic acid?
The formula is (H₂N)₂C₆H₃SO₃H, and the molecular weight is 188.21 g/mol.
What safety classification does this product have, and how should it be handled?
The product is labeled with the signal word 'Danger' due to its hazardous properties; handle with appropriate PPE and follow MSDS guidelines.
What grades or purities of 2,5-Diaminobenzenesulfonic acid does Molekula supply?
Molekula supplies this product in technical and high-purity grades, typically ≥95% purity unless specified otherwise.
Can Molekula supply 2,5-Diaminobenzenesulfonic acid in bulk quantities?
Yes, we offer bulk quantities—please contact us for minimum order quantities (MOQs) and logistics details.
What documentation comes with an order of 2,5-Diaminobenzenesulfonic acid?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing list.
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.