UN/NA Number Reference

UN 2862: Vanadium pentoxide, non-fused form

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 2862 is assigned the proper shipping name Vanadium pentoxide, non-fused form in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 6.1 Toxic Substance material, Packing Group II. Required label(s): 6.1.

Packing group indicates the degree of danger within a hazard class: PG I is high danger, PG II medium, PG III low. The proper shipping name, hazard class, UN number, and packing group together form the basic shipping description that must appear on shipping papers and, where required, on the package and placard.

Emergency Response (ERG Guide 154)

Hazards: TOXIC. Corrosive. Non-combustible but may decompose producing toxic fumes when heated.

Fire: Use agent appropriate for surrounding fire. Cool containers.

Spill: Do not touch. Avoid inhalation. Use water spray to reduce fumes.

Chemical and Physical Properties

Vanadium pentoxide appears as a yellow to red crystalline powder. Slightly soluble in water and denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption.

CAS Number: 1314-62-1

Molecular Formula: O5V2

Molecular Weight: 181.88 g/mol

Color / Form: Yellow to rust-brown orthorhombic crystals

Odor: Odorless

Boiling Point: 3182 °F at 760 mmHg decomposition (EPA, 1998)

Melting Point: 1274 °F (EPA, 1998)

Specific Gravity: 3.357 at 64.4 °F (EPA, 1998) - Denser than water; will sink

Vapor Pressure: Approximately 0 at 68F (EPA, 1998)

Water Solubility: less than 1 mg/mL at 68 °F (NTP, 1992)

pH: pH = 2.7, saturated aqueous solution at 20 °C

Regulatory Data

CERCLA RQ (40 CFR 302.4)

1000 lb

EPCRA TPQ (40 CFR 355)

100 lb

OSHA PEL

C 0.1 mg V 2 O 5 /m 3

NIOSH REL

C 0.05 mg V/m 3 [15-minute]

IDLH

35 mg/m 3 (as V)

RCRA Waste Code(s)

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A release of this material at or above its CERCLA reportable quantity (1000 lb) requires immediate notification to the National Response Center at 800-424-8802.

Special Provisions

49 CFR 172.102 special provision codes for this entry: IB8, IP3, T1, TP33. These codes modify the general requirements (packaging, quantity limits, exceptions) for this specific material. Look up each code in 49 CFR 172.102 for the full text.

Need the full interactive record? Open UN 2862 in the SpillNerd lookup tool for the live database entry with placard graphics, GHS pictograms, full segregation tables, and synonym search. For another material, use the UN number and chemical lookup.

Reference data compiled from the DOT Hazardous Materials Table (49 CFR 172.101), the 2024 Emergency Response Guidebook, and public chemical databases (PubChem, NIOSH, EPA). Always verify the correct shipping description against the current regulation and the manufacturer's SDS Section 14 before shipping.