Industrial chemicals · Taylor, TXTechnical Data Sheet
Ammonium Hydroxide 29% ACS Grade
ACS Grade · 29%
Identity & Composition
- Product Name
- Ammonium Hydroxide 29% ACS Grade
- Alliance Code
- ammonium-hydroxide-29-acs-grade
- Grade
- ACS Grade
- Concentration
- 29%
- CAS Number
- 1336-21-6PubChem
- Formula
- H5NOPubChem
- Molecular Weight
- 35.046PubChem
- Product Type
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (NH3) | 28.0-30.0% | 29.0 % | Acid-base titration: transfer a cooled aliquot into 1 N sulfuric acid VS, back-titrate excess acid with 1 N sodium hydroxide VS using methyl red TS | ACS Reagent Chemicals |
| Carbon dioxide (CO2) | Max 0.002% | 0.0004 % | — | ACS Reagent Chemicals |
| Chloride (Cl) | Max 0.5 ppm | 0.15 ppm | — | ACS Reagent Chemicals |
| Heavy metals (as Pb) | Max 0.5 ppm | 0.05 ppm | — | ACS Reagent Chemicals |
| Iron (Fe) | Max 0.2 ppm | 0.02 ppm | — | ACS Reagent Chemicals |
| Nitrate (NO3) | Max 2 ppm | 0.3 ppm | — | ACS Reagent Chemicals |
| Substances reducing permanganate | To pass Test | Passes test | — | ACS Reagent Chemicals |
| Phosphate (PO4) | Max 2 ppm | 0.10 ppm | — | ACS Reagent Chemicals |
| Residue after ignition | 0.002 % Maximum | 0.0003 % | — | ACS Reagent Chemicals |
| Sulfur compounds (as SO4) | Max 2 ppm | 0.2 ppm | — | ACS Reagent Chemicals |
Specification values are guaranteed limits. Typical values are representative of production lots and are not guaranteed. Lot-specific certificates of analysis ship with every order.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade ACS Grade | 29% | — | current | current |
| Technical Grade | 29% | — | ammonium-hydroxide-29-technical-grade | View TDS → |
| ACS | 20% | — | ammonium-hydroxide-20-acs-grade | View TDS → |
| Technical | 20% | — | ammonium-hydroxide-20-technical-grade | View TDS → |
| ACS | 15% | — | ammonium-hydroxide-15-acs-grade | View TDS → |
| Technical | 15% | — | ammonium-hydroxide-15-technical-grade | View TDS → |
| ACS | 10% | — | ammonium-hydroxide-10-acs-grade | View TDS → |
| Technical | 10% | — | ammonium-hydroxide-10-technical-grade | View TDS → |
| ACS | 5% | — | ammonium-hydroxide-5-acs-grade | View TDS → |
| Technical | 5% | — | ammonium-hydroxide-5-technical-grade | View 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.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Colorless liquid | Published reference |
| Form | Liquid | Published reference |
| Color | Clear, Colorless | ACS Reagent Chemicals |
| Odor | Intense, pungent, suffocating ammonia odor | Published reference |
| pH | ~13.8 (29% solution) | Published reference |
| Specific Gravity (20 °C) | 0.896- 0.902 at 60 °F | Supplier specification |
| Density | 0.90 (29% w/w aqueous solution, 20 °C) | Published reference |
| Boiling Point | Not characterized for the 29% solution | Published reference |
| Melting Point | Not characterized for the 29% solution | Published reference |
| Flash Point | Not applicable | Published reference |
| Vapor Pressure | High — ammonia off-gasses from solution (~1.5 atm at 25 °C for concentrated aqueous ammonia) | Published reference |
| Solubility (water) | Miscible with water | Published reference |
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| copper and copper alloys | Not recommended | — | tannerind.com |
| aluminum alloys | Not recommended | — | tannerind.com |
| galvanized surfaces | Not recommended | — | tannerind.com |
| copper, copper alloys, aluminum alloys, and galvanized surfaces | Not recommended | — | tannerind.com |
Compatibility is drawn from published manufacturer and supplier documentation for this product; each rating is sourced. Confirm against your specific duty cycle before equipment selection.
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN267249 CFR 172.101
- Hazard Class
- 8Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Ammonia solution, relative density between 0.880 and 0.957 at 15 degrees C in water, with more than 10 percent but not more than 35 percent ammoniaAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H302, H314, H335, H400Adjudicated
- P-Codes (Precautionary Statements)
- P234, P260, P261, P264, P270, P271, P273, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P391, P403+P233, P405, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 50 ppm TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- —no canonical
- NIOSH REL
- 25 ppm TWA / 35 ppm STELNIOSH Pocket Guide
- NIOSH IDLH
- 300 ppmNIOSH Pocket Guide
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 Ammonium Hydroxide 29% ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Catalog EquivalentsCross-reference vs major chemical suppliers
Sigma-Aldrich
| SKU | Grade | Conc. | Match | Notes |
|---|---|---|---|---|
| 320145 | ACS reagent | 28–30% | Exact | Same ACS reagent grade. |
Cross-references are informational. Confirm against the manufacturer's current specification before substitution. Competitor trademarks are property of their respective owners.
Applications
- Acid neutralizationtannerind.com
- Used in the chemical and petroleum industries and in agriculture, resins, polymers, acid neutralization, water treatment, cogeneration NOx scrubbing and explosivestannerind.com
- Feedstock for preparing other ammonium compounds such as urea, ammonium carbonate and ammonium sulfatelaballey.com
- Laboratory solvent, pharmaceutical manufacturing, polymer manufacturing, household cleaning reagent, and food additive / acidity regulatorlaballey.com
- Buffers, ceramics, collagen sausage casing, detergents, fertilizer, hair bleaching and hair colorants, I&I cleaners, ink, photographic chemistry, rayon, refrigeration, selective catalytic reduction (SCR), textiles and window cleanerchemceed.com
- Reagent for compounding analytical test solutionsuspbpep.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Preserve in tight containers, at a temperature not above 25 C; stated for a solution containing 27.0-31.0 percent (w/w) NH3, which brackets this 29% handle. On exposure to air it loses ammonia rapidly.ftp.uspbpep.com
- Handling Precautions
- Use in ventilation or with respiratory protection — vapour is the primary exposure. Chemical splash goggles and gloves. Open and transfer cool; pressure can build in warm sealed containers. Neutralization with acid is exothermic.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Acids (violent neutralization), copper, brass, zinc, aluminium and their alloys, oxidizers, halogens, mercury, and many aldehydes/ketones.Class-level guidance — not product-specific; the SDS controls.
- Shelf Life
- Consult Technical Services for product-specific shelf life
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)
UN2672, Ammonia solution, relative density between 0.880 and 0.957 at 15 degrees C in water, with more than 10 percent but not more than 35 percent ammonia, 8, PG III
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-07-17 by Andre Taki, DOT Hazmat Specialist.
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.4 | 2026-08-27 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-08-05 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 6 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial 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.