Hydrochloric Acid 31%
CAS 7647-01-0 · Part MC-HCL31 · Technical, 20 Baumé
Thirty-one percent hydrochloric acid, 20 Baumé. Standard for pickling, descaling, and regeneration where chloride is acceptable in the effluent.
Specification
- CAS number
- 7647-01-0
- Part number
- MC-HCL31
- Grade
- Technical, 20 Baumé
- Physical form
- Liquid
- Assay / concentration
- 31–33% w/w
- Transport
- UN1789, Class 8, PG II
- Category
- Acids
- Also known as
- muriatic acid, hydrogen chloride solution, 20 be, HCl
Thirty-one to thirty-three percent hydrochloric acid, commonly sold as 20 Baumé muriatic acid.
Typical uses
- Steel pickling and scale removal
- Concrete and masonry etching
- Ion exchange regeneration
- pH adjustment where sulfate is undesirable in the discharge
- Well and pipe acidising
Handling
Hydrochloric acid fumes noticeably. The vapour is corrosive and attacks nearby equipment, so storage areas need ventilation and any metal in the vicinity will corrode over time. Fume-tight storage and scrubbed vents are worth the cost.
Use HDPE, FRP, or rubber-lined equipment. Do not use any bare metal — including stainless steel, which is attacked rapidly.
Compatibility
Violently incompatible with bases, and with hypochlorite — which liberates chlorine gas. Keep acid and bleach storage physically separated with their own containment.
Documents
Available to account holders and sent the same business day. If you need documents routinely, ask us to attach them to your shipping paperwork automatically rather than requesting them one at a time.
Current revision, sixteen-section GHS format
Measured results for the lot you received
Read the sheet before the first use
Section 2 covers the hazards, Section 8 the protective equipment actually required, and Section 10 what this must not be stored next to. Storage incompatibility is the single most common cause of serious chemical incidents.
More in Acids
| Product | CAS | Available as | Documents |
|---|---|---|---|
| Sulfuric Acid 93% Technical, 66 Baumé | 7664-93-9 | Bulk 275 gal tote 55 gal drum 5 gal carboy | SDS · CoA |
| Citric Acid 50% Solution Food grade / USP | 77-92-9 | 275 gal tote 55 gal drum | SDS · CoA |
| Nitric Acid 67% Technical, 42 Baumé | 7697-37-2 | 55 gal drum 5 gal carboy | SDS · CoA |
| Phosphoric Acid 75% Technical / Food grade available | 7664-38-2 | 275 gal tote 55 gal drum 5 gal pail | SDS · CoA |
| Acetic Acid, Glacial Technical / Food grade available | 64-19-7 | 55 gal drum 5 gal pail | SDS · CoA |
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Certificates, insurance, registrations, safety data sheets, and completed supplier questionnaires. Standard documents go out the same business day.