Chemical laboratory

Nitric Acid Low Particle

High-Purity Oxidizing Agent for Industrial Applications

  • CAS 7697-37-2
  • Formula HNO₃
  • Flash Pt N/A °C
  • Density 1.41 g/cm³
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Physical & Chemical Properties

Property Value Unit
Boiling point 83°C °C
Flash point N/A °C
Density 1.41 g/cm³ g/cm³
Solubility Miscible with water -
Ph < 1 (concentrated) -
Molecular weight 63.01 g/mol g/mol
Melting point -42°C °C
Vapor pressure 48 mmHg at 20°C mmHg
Autoignition temp N/A -
Appearance Clear, colorless to slightly yellow liquid -
Odor Pungent, suffocating -
Vapor density 2.2 (air = 1) g/cm³

Overview

Nitric Acid Low Particle (HNO₃) is a highly corrosive, strong mineral acid widely used across industrial manufacturing, electronics, and chemical synthesis applications. This specialized low-particle grade ensures minimal contamination for precision processes requiring ultra-clean chemical environments. With its powerful oxidizing properties and complete water miscibility, nitric acid serves as an essential reagent in metal processing, semiconductor manufacturing, and advanced chemical synthesis operations.

Key Applications

Our Nitric Acid Low Particle excels in industrial etching and metal pickling operations, where its aggressive oxidizing action removes scale, rust, and surface contaminants from stainless steel, aluminum, and other metals. The low-particle formulation makes it ideal for electroplating bath preparation, ensuring consistent plating quality without particulate interference. In chemical synthesis, it functions as a critical oxidizing agent for nitration reactions and inorganic compound production. Laboratory professionals rely on this reagent for analytical procedures, while the fertilizer industry utilizes it in nitrogen-based fertilizer manufacturing processes.

Safety & Handling

Nitric acid presents significant safety hazards requiring strict handling protocols. With no flash point due to its non-flammable nature, fire risk is minimal, but its strong oxidizing properties can intensify combustion of organic materials. Personnel must wear complete chemical-resistant PPE including face shields, acid-resistant gloves, and protective clothing. Adequate ventilation is essential due to toxic nitrogen dioxide vapors released upon decomposition. Emergency eyewash stations and safety showers must be readily accessible in work areas.

Storage & Shelf Life

Store nitric acid in cool, dry, well-ventilated areas away from direct sunlight and heat sources. Use only corrosion-resistant containers such as glass, high-density polyethylene, or specialized stainless steel. Maintain storage temperatures below 25°C to prevent decomposition and vapor generation. Keep strictly separated from organic materials, bases, metals, and reducing agents to prevent violent reactions. Properly stored material maintains stability for extended periods when containers remain sealed and storage conditions are controlled.

Why Alliance Chemical

Alliance Chemical delivers reliable chemical supply solutions from our Taylor, Texas facility, offering same-day shipping for urgent requirements. Our comprehensive logistics network includes UPS for smaller quantities and LTL/FTL freight services for bulk orders. Every shipment includes current Safety Data Sheets (SDS) and Certificates of Analysis (COA) ensuring complete regulatory compliance and product traceability for your quality assurance programs.

Shipping & Availability

Parcel Shipping

UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.

LTL Freight

5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.

Full Truckload

FTL available for palletized bulk orders. Competitive freight rates.

Local Pickup

Same-day pickup at our Taylor, TX warehouse for Texas customers.

SDS, COA, and TDS available for every product • Same-day shipping on orders before 1 PM CT

Frequently Asked Questions

What is low-particle nitric acid (HNO3 70%) and what is it used for?
Low-particle nitric acid is a high-purity 70% w/w HNO3 specially processed to minimize particulate contamination. It is used as a strong oxidizing reagent for laboratory analysis, semiconductor and electronics cleaning, metal etching and other industrial processes that require low particulate levels.
How should I store 70% low-particle nitric acid and what is its shelf life?
Store in a cool, well-ventilated area in compatible corrosion-resistant containers with secondary containment, away from heat, organics and incompatible materials. Typical shelf life is determined by supplier storage recommendations—commonly 12–24 months when kept sealed and stored per the SDS; always verify with the product CoA and supplier guidance.
What personal protective equipment (PPE) and handling precautions are required for concentrated nitric acid?
Use chemical-resistant gloves (e.g., neoprene or butyl), splash goggles or face shield, lab coat or apron and work in a fume hood with appropriate ventilation. Avoid inhalation and contact, never mix with organics or reducing agents, and have emergency eyewash/shower and neutralizing materials readily available; consult the SDS for detailed emergency measures.
How does the 70% concentration differ from other nitric acid grades and why choose a low-particle grade?
At 70% w/w HNO3 the solution is a concentrated, strongly oxidizing acid with higher reactivity and stricter handling requirements than dilute grades; concentration affects oxidizing strength and material compatibility. Low-particle grades are selected when particulate contamination must be minimized, such as in semiconductor manufacturing or trace-analytical work.
What documentation is provided with each lot of low-particle nitric acid?
Typical documentation includes a Safety Data Sheet (SDS), a lot-specific Certificate of Analysis (CoA) showing concentration and impurity/particulate data, packing list and any required transport or customs paperwork. Additional documents (e.g., material declarations or traceability reports) are available on request from the supplier.
How is 70% nitric acid packaged and shipped safely?
It is packaged in corrosion-resistant containers such as lined steel drums, HDPE drums, IBCs or glass/PTFE bottles for small volumes, using secondary containment and proper labeling. Nitric acid is transported under hazardous materials regulations as a corrosive/oxidizing material and must be shipped with correct placarding, segregation and compliant paperwork per local and international rules.
Which materials are compatible with 70% nitric acid and which should be avoided?
Compatible materials include glass, PTFE, PVDF, and certain plastics and linings designed for strong oxidizers; some stainless steels can be used under controlled conditions. Avoid carbon steel, copper, brass and other reactive metals, as well as organic materials and reducing agents which can ignite or react violently.
What technical specifications are available for this product?
Key specifications include CAS 7697-37-2, chemical formula HNO3 and nominal concentration 70% w/w; appearance is typically a colorless to pale yellow liquid and it is fully water‑miscible. Exact impurity levels, particulate counts, density and other analytical data are provided on the product datasheet and lot-specific CoA.
Which industries and applications commonly use low-particle 70% nitric acid?
Common applications include semiconductor and electronics wafer cleaning, laboratory reagents and analytical chemistry, metal etching and surface preparation, and industrial nitration or chemical synthesis processes where low particulate levels are critical. Industrial users select low-particle grades to reduce contamination risk in precision processes.
How can I purchase 70% low-particle nitric acid and are there any regulatory requirements?
Contact your chemical supplier or distributor for pricing, available pack sizes and lead times; orders may be subject to minimum quantities and shipment constraints. Purchases and transport are subject to local hazardous materials regulations and commercial/industrial-use requirements—suppliers may request business credentials, intended use or compliance documentation before sale.

Documentation & Downloads

Safety Data Sheet
SDS / MSDS
Request COA
Certificate of Analysis
Technical Data Sheet (TDS)
Available for all products

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