O-(Carboxymethyl)hydroxylamine hemihydrochloride
O-(Carboxymethyl)hydroxylamine hemihydrochloride (CAS 2921-14-4), with the linear formula NH2OCH2COOH · 0.5HCl and a molecular weight of 109.30, is a specialised organic building block. It is primarily employed in chemical synthesis, particularly within the realm of nitrogen compounds and hydroxylamine derivatives. This compound serves as a valuable intermediate for researchers and chemists developing novel molecules and materials.
- IUPAC
- (Aminooxy)acetic acid hemihydrochloride,(Carboxymethoxy)amine hemihydrochloride,Hydroxylamine-O-acetic acid hemihydrochloride
- Synonyms
- (Aminooxy)acetic acid hemihydrochloride(Carboxymethoxy)amine hemihydrochlorideHydroxylamine-O-acetic acid hemihydrochloride

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of complex organic molecules. Its unique structure allows for the introduction of specific functional groups in multi-step synthetic pathways.
Research and Development
Utilised in academic and industrial R&D laboratories for exploring new chemical reactions and developing novel compounds. It is a reagent for studies in medicinal chemistry and materials science.
Hydroxylamine Derivative Chemistry
A precursor for generating other hydroxylamine derivatives, enabling the study of their properties and applications in various chemical fields.
| Molecular weight | 109.30 |
|---|---|
| Linear formula | NH2OCH2COOH · 0.5HCl |
| Assay | ≥97.0% (AT) |
| Storage temperature | 2-8°C |
| Melting point | 156 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is O-(Carboxymethyl)hydroxylamine hemihydrochloride used for?
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O-(Carboxymethyl)hydroxylamine hemihydrochloride is primarily used as a building block in chemical synthesis and in research and development for creating novel organic molecules and hydroxylamine derivatives.
What is the CAS number and formula for O-(Carboxymethyl)hydroxylamine hemihydrochloride?
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The CAS number is 2921-14-4, and the linear formula is NH2OCH2COOH · 0.5HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies O-(Carboxymethyl)hydroxylamine hemihydrochloride with a minimum assay of 97.0% (AT). We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should O-(Carboxymethyl)hydroxylamine hemihydrochloride be handled?
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This compound is classified as a Warning. It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, in a well-ventilated area.
Is O-(Carboxymethyl)hydroxylamine hemihydrochloride a controlled substance?
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Based on the provided data, there is no indication that O-(Carboxymethyl)hydroxylamine hemihydrochloride is a controlled substance.
How is O-(Carboxymethyl)hydroxylamine hemihydrochloride supplied and exported?
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O-(Carboxymethyl)hydroxylamine hemihydrochloride is stored at 2-8°C and is available for global supply and export by Tech Serve Solutions.
How can I request a sample or quote for O-(Carboxymethyl)hydroxylamine hemihydrochloride?
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Please contact the Tech Serve Solutions sales team directly through our website or by phone to request a sample or obtain a quotation for O-(Carboxymethyl)hydroxylamine hemihydrochloride.
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