Technical Data Sheet

Sodium Hypochlorite 3%

CAS Number
7681-52-9
Alliance Code
sodium-hypochlorite-3
Generated
2026-06-02
Last reviewed 2026-05-20 by Hossein Taki, Vice President.

1. Identity & Composition

Product Name
Sodium Hypochlorite 3%
Alliance Code
sodium-hypochlorite-3
Grade
Concentration
CAS Number
7681-52-9PubChem
Formula
ClNaOPubChem
Molecular Weight
74.44PubChem
Product Type
solution

Available GradesSame CAS, alternate grades and concentrations

GradeConcentrationTypical AssaySKUTDS
This grade currentcurrent
12.5%sodium-hypochlorite-12-5View TDS →
8.25%sodium-hypochlorite-8-25View TDS →
5.25%sodium-hypochlorite-5-25View TDS →
sodium-hypochlorite-1View TDS →
sodium-hypochlorite-10View TDS →
sodium-hypochlorite-2View TDS →
sodium-hypochlorite-6View TDS →

Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.

Materials of Construction

MaterialRatingMax T (°C)NotesSource
Buna-N (NBR)
elastomer
Not recommendedRapid degradation; never use with oxidizers.Parker O-ring Chemical Compatibility
EPDM
elastomer
Fair60Service below 35 %; swelling and embrittlement above.Parker O-ring Chemical Compatibility
Viton (FKM)
elastomer
PoorUse EPDM or PTFE for sealingSolvay H2O2 Safety & Handling
PTFE
fluoropolymer
Excellent100Gaskets, lining; best-in-classSolvay H2O2 Safety & Handling
PVDF
fluoropolymer
Excellent80Preferred fluoropolymer for pipingSolvay H2O2 Safety & Handling
PVDF (Kynar)
fluoropolymer
Excellent100Standard for high-purity peroxide service.Solvay H2O2 Materials of Construction
Borosilicate Glass
glass ceramic
Excellent100Inert to all oxidizers within normal service temperatures.Cole-Parmer Chemical Compatibility
Concrete (untreated)
glass ceramic
Not recommendedReactive; line with HDPE/FRPSolvay H2O2 Safety & Handling
304 stainless steel
metal
Good40May darken; acceptable for short-term storageSolvay H2O2 Safety & Handling
304 Stainless Steel
metal
Fair40Surface oxidation at higher concentrations; passivate before service.Cole-Parmer Chemical Compatibility
316 stainless steel
metal
Excellent40Passivated surfaces preferredSolvay H2O2 Safety & Handling
316L stainless steel
metal
Excellent60Welds require post-weld passivationSolvay H2O2 Safety & Handling
316L Stainless Steel
metal
Good60Passive layer stable; avoid prolonged service above 60 °C.Solvay H2O2 Materials of Construction
Aluminium 1100/3003
metal
Good40Limit to dilute serviceSolvay H2O2 Safety & Handling
Brass
metal
Not recommendedCopper-induced decompositionSolvay H2O2 Safety & Handling
Carbon steel
metal
Not recommendedCatalytic decomposition; not for any serviceSolvay H2O2 Safety & Handling
Carbon Steel
metal
Not recommendedRapid corrosion; never use with oxidizers.Cole-Parmer Chemical Compatibility
Copper
metal
Not recommendedCatalytic decomposition; severeSolvay H2O2 Safety & Handling
CPVC
thermoplastic
Good60Acceptable to 60 °CSolvay H2O2 Safety & Handling
HDPE
thermoplastic
Good50Concentrations ≤ 50%; vented containers onlySolvay H2O2 Safety & Handling
Polypropylene
thermoplastic
Good25Service below 35 % at ambient; avoid above 25 °C.Cole-Parmer Chemical Compatibility
PVC
thermoplastic
Fair40Embrittlement risk above 40 °CSolvay H2O2 Safety & Handling

Ratings reflect the service envelope (concentration × temperature) shown. Always confirm against your specific duty cycle and contact-time before equipment selection. The most cautious rating across overlapping references is shown.

Materials Selection Tool

Showing 20 of 22 materials compatible at the selected envelope.

MaterialRatingMax T (°C)Notes
Buna-N (NBR)
elastomer
Not recommendedRapid degradation; never use with oxidizers.
Viton (FKM)
elastomer
PoorUse EPDM or PTFE for sealing
PTFE
fluoropolymer
Excellent100Gaskets, lining; best-in-class
PVDF
fluoropolymer
Excellent80Preferred fluoropolymer for piping
PVDF (Kynar)
fluoropolymer
Excellent100Standard for high-purity peroxide service.
Borosilicate Glass
glass ceramic
Excellent100Inert to all oxidizers within normal service temperatures.
Concrete (untreated)
glass ceramic
Not recommendedReactive; line with HDPE/FRP
304 stainless steel
metal
Good40May darken; acceptable for short-term storage
304 Stainless Steel
metal
Fair40Surface oxidation at higher concentrations; passivate before service.
316 stainless steel
metal
Excellent40Passivated surfaces preferred
316L stainless steel
metal
Excellent60Welds require post-weld passivation
316L Stainless Steel
metal
Good60Passive layer stable; avoid prolonged service above 60 °C.
Aluminium 1100/3003
metal
Good40Limit to dilute service
Brass
metal
Not recommendedCopper-induced decomposition
Carbon steel
metal
Not recommendedCatalytic decomposition; not for any service
Carbon Steel
metal
Not recommendedRapid corrosion; never use with oxidizers.
Copper
metal
Not recommendedCatalytic decomposition; severe
CPVC
thermoplastic
Good60Acceptable to 60 °C
HDPE
thermoplastic
Good50Concentrations ≤ 50%; vented containers only
PVC
thermoplastic
Fair40Embrittlement risk above 40 °C

Regulatory & Transport

DOT / 49 CFR

UN Number
UN1791Vendor Label
Hazard Class
8Adjudicated
Packing Group
IIIAdjudicated
Proper Shipping Name
Hypochlorite solutionAdjudicated

GHS / OSHA HazCom 2012

Signal Word
DangerAdjudicated
H-Codes (Hazard Statements)
unknown
P-Codes (Precautionary Statements)
unknown

Occupational Exposure Limits

OSHA PEL (29 CFR 1910.1000)
unknown
ACGIH TLV
unknown
NIOSH REL
unknown
NIOSH IDLH
unknown

Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: ECHA CLP Annex VI for harmonised classifications, NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.

Supplier Qualification Packet

One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Sodium Hypochlorite 3%. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.

Download audit packet

Application Guidance

Sodium Hypochlorite 3% is supplied for applications where controlled, selective oxidation is required. Grade selection drives the choice between bulk industrial oxidation, electronics/semiconductor cleaning, and pharmaceutical-grade disinfection.

  • Pulp and textile bleaching
  • Wastewater treatment and odor control
  • Etching and surface cleaning (electronics-grade only)
  • Disinfection and sterilization (food/pharma-grade only)
  • Chemical synthesis and polymerization initiation

Materials of construction must be rated for the concentration and temperature in service. Avoid contact with reducing agents, transition metals, and organic combustibles.

Storage & Handling

Recommended Storage
Cool, well-ventilated area, away from heat, sunlight, and combustibles. Vented containers only — pressure may develop from slow decomposition. Original sealed containers; segregate from organics, metals (especially copper, iron, manganese), and reducing agents.
Handling Precautions
Use PPE including face shield, chemical-resistant gloves, and apron. Avoid contamination — never return unused material to the original container. Ground all transfer equipment.
Incompatibilities
Combustible materials, organic compounds, reducing agents, transition metal salts (catalytic decomposition), strong bases.
Shelf Life
24 months from date of manufacture in sealed, original packaging

For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.

Packaging & Logistics

Shipping Description (US DOT)

UN1791, Hypochlorite solution, 8, PG III

Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.

NMFC Class
65
Placard
Corrosive
Packing Group
PG III

Revision History

Last reviewed 2026-05-20 by Hossein Taki, Vice President (Vice President, Alliance Chemical · CAGE Code 1LT50 · DOT Hazmat Registrant #2188383).

VersionDateChangeTrigger
1.02026-05-20Initial URL-first TDS published from canonical chemistry registry.initial

This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.