Nitric Acid
HNO₃
Nitric acid (HNO₃, CAS 7697-37-2) is a strong, oxidising mineral acid supplied as a 68–70% technical grade. Industrial plants use it for pH control of alkaline streams, metal precipitation, cleaning and descaling of process equipment, stainless-steel passivation and controlled oxidation. CHIMI ART supplies it across Egypt in 200 L drums, 1,000 L IBCs and bulk tankers.
Product Overview
Nitric acid (HNO₃, CAS 7697-37-2) is a strong, oxidising mineral acid supplied as a 68–70% technical grade. Industrial plants use it for pH control of alkaline streams, metal precipitation, cleaning and descaling of process equipment, stainless-steel passivation and controlled oxidation. CHIMI ART supplies it across Egypt in 200 L drums, 1,000 L IBCs and bulk tankers.
Technical Specifications
- Chemical Formula
- HNO₃
- CAS Number
- 7697-37-2
- Appearance
- Colorless liquid with sharp odor
- Concentration
- 68-70% HNO₃
- Specific Gravity
- 1.40-1.42
- pH Range
- < 1.0
- Solubility
- Fully miscible with water
- Available Packaging
- 200L drums · 1000L IBC · Bulk tanker
- Shelf Life
- 12 months
- Storage Conditions
- Acid-resistant containers
| Property | Value |
|---|---|
| Chemical Formula | HNO₃ |
| CAS Number | 7697-37-2 |
| Appearance | Colorless liquid with sharp odor |
| Concentration | 68-70% HNO₃ |
| Specific Gravity | 1.40-1.42 |
| pH Range | < 1.0 |
| Solubility | Fully miscible with water |
| Available Packaging | 200L drums · 1000L IBC · Bulk tanker |
| Shelf Life | 12 months |
| Storage Conditions | Acid-resistant containers |
Applications
Dosing Guidelines
Set concentration and dosing through the approved procedure for the specific process, materials and operating conditions. The supplied acid concentration is not the working concentration of a cleaning bath. Confirm the batch assay and consult the current safety data sheet before use.
How It Works
Nitric acid combines acidity with oxidising behaviour. Its effect depends on the material, concentration and operating conditions. A stainless-steel passivation application does not establish compatibility with every alloy or cleaning duty.
Usage Tips
Nitric acid is corrosive and oxidising. Follow the current product safety data sheet and the site handling procedure. Confirm the suitability of tanks, seals, pipework and protective equipment for the actual concentration and temperature. This page is not an operating or spill-response procedure.
Nitric acid concentration: what the specification means
The published product sheet lists 68–70% nitric acid. Specify the required assay and impurity limits for your application, then check the agreed product specification and the actual batch certificate. A nominal concentration range is not a guarantee that two deliveries are interchangeable in every process.
Technical grade describes the supplied product; it does not establish suitability for food, pharmaceutical or agricultural use. Confirm any application-specific requirement before ordering.
Match nitric acid to the process
Start with the purpose of treatment, the equipment materials and the operating conditions. Cleaning, passivation and pH control have different requirements. A supplied concentration is not a ready-to-use treatment instruction.
Provide the process specification or approved procedure with the enquiry. This allows the concentration, documentation and supply format to be assessed together.
What to include in a nitric acid enquiry
State the required concentration, application, quantity and delivery destination. Include purity limits, documentation requirements and the planned receiving arrangement.
The published technical sheet lists 200 L drums, 1,000 L IBCs and bulk tanker formats. Confirm current availability, unloading requirements and the agreed specification before placing an order.
Documents to review before receipt
Use the technical data sheet for product information, the agreed specification for acceptance criteria, the batch certificate for the delivered lot and the safety data sheet for hazards and handling. These documents serve different purposes.
NIOSH identifies nitric acid as corrosive and able to increase the flammability of combustible materials. Do not interpret an industrial concentration as a promise of fume-free handling. Follow the current product safety sheet and the site procedure.
| Item | Confirm before ordering |
|---|---|
| Identity | HNO₃; CAS 7697-37-2 |
| Published concentration | 68–70% HNO₃; confirm the agreed specification |
| Application | Process duty, materials and purity requirements |
| Supply format | Quantity, packaging and receiving arrangements |
| Documents | Technical sheet, safety sheet, agreed specification and batch certificate |
Certifications & Compliance
Frequently Asked Questions
What is nitric acid 68% used for?
Nitric acid 68–70% is used in industry for pH control of alkaline streams, metal precipitation, cleaning and descaling of process equipment, passivation of stainless steel, pickling and controlled oxidation. It is a technical grade: suitability for food, pharmaceutical or agricultural use is not implied and must be confirmed against the required specification.
What concentration of nitric acid does CHIMI ART supply?
The published technical data sheet lists 68–70% HNO₃. Confirm the required assay in your enquiry and check the batch certificate before use. Availability of other concentrations or purity grades needs separate confirmation.
What is the chemical formula and CAS number of nitric acid?
The formula is HNO₃ and the CAS number is 7697-37-2. Use the current product safety data sheet for the transport description and classification applicable to the supplied material.
How is nitric acid used for cleaning and descaling?
Specify the deposit, equipment alloy, seals and operating conditions before selecting a cleaning process. The correct working concentration, temperature and contact time belong in an approved procedure. Do not apply a general website dilution range to a different installation.
How should nitric acid be stored and handled safely?
Use the current product safety data sheet together with your site risk assessment. Storage materials, ventilation, segregation and protective equipment must match the supplied grade and working conditions. Obtain the sheet before arranging receipt or handling.
What is the molecular mass of nitric acid?
63.01 g/mol (H 1.008 + N 14.007 + O 3 × 15.999). A 68 % solution with a density of about 1.41 g/mL therefore contains roughly 960 g of HNO₃ per litre, which is about 15 mol/L — the figure to use when converting between weight-percent, molarity and the dilution needed for a working solution.
Is nitric acid an oxidiser as well as a corrosive, and how is it classified for transport?
Yes. Nitric acid is corrosive and oxidising. Transport requirements depend on the supplied material; confirm the applicable description, hazard labels and packing requirements from its current safety data sheet and shipping documentation.
Nitric acid or hydrochloric acid — which is used for pickling?
The choice depends on the substrate, contaminants and approved treatment specification. Nitric-acid passivation and hydrochloric-acid pickling are different processes. Confirm material compatibility and process requirements before choosing either chemical.
Can nitric acid be delivered in bulk in Egypt, and what tank material is needed?
The published technical data sheet lists drums, IBCs and bulk tanker delivery formats. Include your destination, quantity, unloading arrangements and tank details in the enquiry. Confirm delivery availability and material compatibility before ordering.
Is nitric acid the same as aqua fortis (maa el-nar)?
Aqua fortis is a traditional name for nitric acid. Trade names can be ambiguous: identify the chemical by HNO₃, CAS 7697-37-2 and the required concentration when requesting a quotation.
Is nitric acid used in agriculture and fertilizers?
This page describes an industrial technical grade. For agricultural use, provide the required specification and obtain a qualified assessment of suitability. Do not assume the industrial product meets an agricultural specification.
Where can I buy nitric acid in Egypt?
Request a quote on this page with the required concentration, application, quantity and delivery location. Ask for the current technical and safety data sheets and confirm the agreed specification, availability and delivery terms before ordering.
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