Molekula
p-Arsanilic 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
p-Arsanilic acid is an organic arsenic compound used in research and industrial applications, particularly as a precursor in the synthesis of dyes and pharmaceuticals. It is a white to pale yellow crystalline powder with a molecular formula of C6H8AsNO3 and a molecular weight of 217.05 g/mol. It is stable at ambient temperatures and should be handled with care due to its toxicity. Molekula supplies p-Arsanilic 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
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.
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100 g — £155.00 per pack ex VAT · £186.00 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 off-white to gray powder |
| Assay | ≥98%(HPLC) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystalline powder |
| Odour | Practically odorless |
| Melting Point | 232 °C |
| Vapour Pressure | 1880000000 mmHg |
Source: PubChem CID 7389 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 31968396 |
| CAS Number | 98-50-0 |
| IUPAC Name | (4-aminophenyl)arsonic acid |
| EC Number | 202-674-3 |
| Molecular Formula | C6H8AsNO3 |
| Molecular Weight | 217.05 |
| Exact Mass | 216.972 |
| SMILES | C1=CC(=CC=C1N)[As](=O)(O)O |
| InChIKey | XKNKHVGWJDPIRJ-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H8AsNO3/c8-6-3-1-5(2-4-6)7(9,10)11/h1-4H,8H2,(H2,9,10,11) |
| PubChem CID | 7389 |
| UN Number | UN3465 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29319030 |
| Tariff Code | 2931900090 |
Safety & GHS
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H301 + H311 + H331 Toxic if swallowed, in contact with skin or if inhaled
- H351 Suspected of causing cancer
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, 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
- (4-Aminophenyl)arsonic acid
- 4-Aminobenzenearsonic acid
- 4-Arsanilic acid
- Aminophenylarsine acid
- ARSANILIC ACID
- Atoxylic acid
- p-Aminobenzenearsonic acid
- p-Anilinearsonic acid
- Pro-Gen
- Pro-Gen 227 premix
Frequently asked questions
What is p-Arsanilic acid used for?
p-Arsanilic acid is primarily used as a precursor in the synthesis of pharmaceuticals and dyes, and historically as a feed additive in animal husbandry.
What is the chemical formula and molecular weight of p-Arsanilic acid?
The formula is C6H8AsNO3 and the molecular weight is 217.05 g/mol.
How should p-Arsanilic acid be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of p-Arsanilic acid does Molekula supply?
Molekula supplies p-Arsanilic acid in reagent grade.
Can Molekula supply p-Arsanilic acid in bulk?
Yes, Molekula can supply p-Arsanilic acid in bulk quantities upon request.
What documentation comes with a purchase of p-Arsanilic acid?
Each order includes a Certificate of Analysis 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.