Educational content for trained professionals. Not a Safety Data Sheet, not medical advice. In an emergency, call your local poison control or emergency services immediately. Terms of use.
Acid Blue 113
Also known as: ACID BLUE 113 · Acid Fast Blue 5R · Sulfon Blue 5R · Cirene Blue 5RA
- CAS No.
- 3351-05-1
- Formula
- C32H21N5Na2O6S2
- Molar mass
- 681.7 g/mol
- PubChem CID
- 18776
Harmful / Irritant
Environmental hazard
Summary
Acid Blue 113 (C32H21N5Na2O6S2), CAS 3351-05-1. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Physical properties
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Hazards
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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Compatibilities
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Open comparator with Acid Blue 113Practical safety notes
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
- Environmental hazard. Do not release to sewers or waterways; collect for hazardous waste disposal.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is Acid Blue 113 flammable?+
Acid Blue 113 (CAS 3351-05-1) does not carry the GHS02 flame pictogram in our records. Always confirm with the manufacturer's SDS section 9 (flash point) before assuming a product is non-flammable.
What PPE should I wear when handling Acid Blue 113?+
Safety glasses with side shields and nitrile gloves are the baseline. Ventilation should be sufficient to keep vapours below the occupational exposure limit. Check SDS section 8 for material-specific breakthrough times.
How should Acid Blue 113 be stored?+
Store Acid Blue 113 (CAS 3351-05-1) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials.
Is Acid Blue 113 dangerous for the environment?+
Yes. Acid Blue 113 carries the GHS09 environment pictogram. Do not release to drains, soil or waterways; collect residues for hazardous-waste disposal in line with local regulations.
Where can I find the official Safety Data Sheet for Acid Blue 113?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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