Molekula
5-Hydroxyisophthalic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
5-Hydroxyisophthalic acid is a dicarboxylic acid used in organic synthesis and as a building block for polymers and pharmaceuticals. It appears as a white to off-white crystalline powder. CAS: 618-83-7, Molecular Formula: C8H6O5, Molecular Weight: 182.13 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies 5-Hydroxyisophthalic 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
On backorder — expected to ship by 25 November 2026
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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100 g — £49.20 per pack ex VAT · £59.04 inc. VAT
Need a different quantity or pack?
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 | Off-white solid |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 24242615 |
| CAS Number | 618-83-7 |
| IUPAC Name | 5-hydroxybenzene-1,3-dicarboxylic acid |
| EC Number | 210-565-7 |
| Molecular Formula | HOC6H3-1,3-(CO2H)2 |
| Molecular Weight | 182.13 |
| Exact Mass | 182.0215 |
| SMILES | C1=C(C=C(C=C1C(=O)O)O)C(=O)O |
| InChIKey | QNVNLUSHGRBCLO-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H6O5/c9-6-2-4(7(10)11)1-5(3-6)8(12)13/h1-3,9H,(H,10,11)(H,12,13) |
| PubChem CID | 69257 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2918296500 |
| Tariff Code | 2918290090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
We haven't published a Safety Data Sheet for this product yet. Ask us and we'll send you one.
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,3-Benzenedicarboxylic acid, 5-hydroxy-
- 3,5-dicarboxyphenol
- 5-HIPA
- 5-Hydoxyisophthalic acid
- 5-Hydroxy-1,3-benzenedicarboxylic acid
- 5-hydroxybenzene-1,3-dicarboxylic acid
- 5-Hydroxyisosphthalic acid
- 5-Oxyisophthalic acid
- Isophthalic acid, 5-hydroxy-
- QNVNLUSHGRBCLO-UHFFFAOYSA-
Frequently asked questions
What is 5-Hydroxyisophthalic acid used for?
It is primarily used as a building block in the synthesis of polymers and specialty chemicals, particularly in the development of high-performance materials and pharmaceutical intermediates.
What is the chemical formula and molecular weight of 5-Hydroxyisophthalic acid?
The formula is HOC6H3-1,3-(CO2H)2 and the molecular weight is 182.13 g/mol.
How should 5-Hydroxyisophthalic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for 5-Hydroxyisophthalic acid?
Molekula supplies 5-Hydroxyisophthalic acid in technical grade; custom purity levels may be available upon request.
Can Molekula supply 5-Hydroxyisophthalic acid in bulk?
Yes, Molekula can supply 5-Hydroxyisophthalic acid in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of 5-Hydroxyisophthalic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.