What is HCl? HCl (hydrochloric acid) is a strong inorganic acid in aqueous solution, used for rust removal from steel, pH adjustment, water treatment, and many industrial chemical processes.
hydrochloric acidCAS 7647-01-0, formula HCl. Vietnamese B2B goods are usually around... 32-35%COA/MSDS are provided in batches upon request through Loc Thien.
- HCl = hydrochloric acid — a strong acid; commercially available CN concentration is 32–35% w/w.
- Main applications: metal rust removal, pH adjustment, wastewater treatment, textile dyeing, chemical intermediates.
- Corrosive to skin, eyes, and metal; PPE required; B2B procurement with COA/MSDS (no retail price listed).
When technicians or procurement ask "What is HCl?", they usually need to know the full name, CAS number, commercial concentration, industry applications, safety information, and how to obtain a price quote. This article provides a practical summary for you to refer to MSDS/COA — it does not replace internal factory SOPs. This website is a supplementary information channel; quotation and main supply via Loc Thien.
What is HCl (hydrochloric acid)?
HCl is the abbreviation for hydrochloric acid (HCl acid, hydrochloric acid). English: hydrochloric acidSome older documents also call it muriatic acid.
Pure HCl is a gas; in industry you almost always use it. aqueous HCl solutionHydrochloric acid (HCl) dissolves readily in water, forming a strong acidic solution that is easy to pump and meter when the pipe material is compatible.
- This is the model: HCl
- CAS: 7647-01-0 (Matching MSDS/COA; remains unchanged regardless of solution percentage)
- Common commercial form in Vietnam: liquid solution32-35% w/w
- Key properties: strong acid, corrosive, can produce fumes at high concentrations and increased temperatures.
Reference specifications
The table below shows a common technical framework. Acceptance values are taken from... COA for each batch.
| Targets | Reference value |
|---|---|
| Name / alias | Hydrochloric acid, HCl acid, hydrochloric acid |
| Formula | HCl |
| CAS | 7647-01-0 |
| Commercial concentration (VN) | Typically ~32–35% w/w (± COA tolerance); some batches ~20% depending on application. |
| Condition / Appearance | Liquid solution; colorless to slightly pale yellow; pungent odor. |
| Corrosive properties | Strong against skin, eyes, many metals, and some materials. |
| Common packaging | HDPE cans, IBCs, tank trucks (according to supplier and delivery route) |
| B2B Profile | COA per batch; MSDS; packaging specifications and delivery conditions |
Upon receiving the goods: check the seal, concentration label, batch number, and compare with the COA. Any unusual cloudiness or foreign matter — isolate the product and consult a technician before transferring it to the production tank.
Key features to remember
- Strong acids: Strongly dissociates in water; alkali neutralizes with exothermic action — controlled injection.
- Corrosive: Skin, eyes, respiratory tract (smoke); metals (iron, carbon steel, etc.) if protective measures are not in place.
- Evaporation/Smoke: Concentrated solutions, high temperatures, or open containers can easily produce HCl fumes—ventilate and cover the container.
- Material contained: Prioritize suitable HDPE/PP/IBC or specialized tanks; avoid incompatible materials.
- Dilution: always pour acid into water (Slowly, stirring), do not pour water into concentrated acid.
Common industrial applications
| Industry/Process | The role of HCl | Purchase notes |
|---|---|---|
| Steel / metal | Rust removal (pickling), surface cleaning | Control concentration, temperature, and time; treat acid waste tanks. |
| Water/Wastewater Treatment | Lower the pH and neutralize the alkaline flow. | Dosing based on pH setpoint; acid-resistant pump/valve. |
| Textile dyeing | pH adjustment, several neutralization/fiber preparation steps. | Match the grade according to factory requirements. |
| Basic chemicals | Intermediate, pH regulator, chloride salt… | Concentration and impurities according to product formulation |
| Industrial cleaning | Remove mineral deposits and oxides (when the process allows). | Do not use blindly on acid-sensitive materials. |
| Specific grade (food, etc.) | Only if the grade and legal documents are correct. | No By default, all industrial batches are food-grade. |
Concentration of 32–35% in purchase
In Vietnam, industrial HCl batches are commonly encountered around 32-35% — balancing acid content, transportation costs, and tank/pump design habits.
- ~32–35%: Commonly used for rust removal, wastewater treatment, neutralization, and storage in IBCs/tanks.
- ~20%: Some applications require pre-diluted solutions.
- Special grade: Impurities (iron, heavy metals, etc.) are taken from the Certificate of Analysis (COA), not just the percentage of HCl.
When requesting a price quote, please include: target concentration, packaging, delivery location, monthly production volume, and a request for a COA/MSDS.
Safety and storage
| Category | Practical recommendations |
|---|---|
| minimum PPE | Safety glasses/face shield, chemical-resistant gloves, acid-resistant apron, closed-toe shoes; respiratory protection in case of smoke. |
| Storage | Cool, well-ventilated, with spill tray/shelves; keep away from strong alkalis and oxidizers. |
| Container | HDPE/IBC/specialized tanks; sealed lids; concentration labels + corrosion warnings |
| Dilution | Add acid to water slowly, stirring; control the temperature. |
| Contact incident | Rinse thoroughly with clean water for several minutes; eyes: rinse continuously and treat immediately — details according to the batch MSDS. |
Prioritized MSDS of the batch being usedThis content only supports general risk identification and is not a complete response procedure.
Industrial HCl supplier (Loc Thien)
Wholesale/Industrial Zone requirements: see main product page
32–35% Hydrochloric Acid (CAS 7647-01-0) — Loc Thien.
- On-request pricing based on concentration, volume, and delivery point.
- COA/MSDS will be provided in batches upon order confirmation.
- Acid category: Loc Thien Industrial Acid
- Technical/Purchasing Hotline: (+84) 979 891 929
We don't list retail prices publicly — you send us your operating specifications to receive a tailored quote.
Top Q&A
What is HCl and what other names does it have?
HCl is hydrochloric acid (HCl acid), a strong inorganic acid solution. English: hydrochloric acid; CAS 7647-01-0In industry, you mostly use aqueous solutions, not pure gases.
What is the CAS value of HCl?
The standard CAS is 7647-01-0The percentage concentration varies by batch, but the CAS number on the MSDS/COA remains 7647-01-0.
What are the common concentrations of industrial HCl in Vietnam?
Commonly encountered around 32-35% w/w for rust removal, XLNT, and neutralization. Some applications use ~20%. Acceptance concentration is taken from the COA.
Can HCl be used to treat wastewater?
Okay — mainly for Lower pH / neutralize alkaline flowDosage depends on the influent pH; acid-resistant pump/valve materials should be checked and jar-tested when necessary.
What is the difference between HCl and H2SO4?
Both are strong acids but have different anions (Cl⁻ vs SO₄²⁻), making them corrosive and process-bound. Choose according to the factory's SOP, not just "stronger on paper".
Are a Certificate of Analysis (COA) and a Material Safety Data Sheet (MSDS) required when purchasing B2B HCl?
It is recommended to have a Certificate of Analysis (COA) confirming the concentration and batch specifications; and a Material Safety Data Sheet (MSDS) for PPE and incident response. Loc Thien provides batch documentation when quoting on request.
Where can I buy industrial-grade HCl?
Send concentration, yield, packaging, and delivery point via hotline. (+84) 979 891 929 or page Loc Thien HCl acid product. Prices are quoted based on demand; we do not sell individual items from the shopping cart publicly on our secondary website.
What precautions should be taken when storing HCl?
Store in a cool, well-ventilated place; use suitable HDPE/IBC containers with tight lids and spill trays; keep away from alkalis. Avoid using PPE during handling; dilute according to the principle of acid in water.
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