No neutralization step
The salt goes straight into the reaction, so you skip dosing caustic into MCA and handling the heat it releases.
SMCA
Sodium Chloroacetate (SMCA) Supplier from China
Sodium chloroacetate (SMCA, sodium monochloroacetate) is the pre-neutralized form of MCA, used where a process needs the chloroacetate group without adding caustic first — betaine surfactants, CMC and carboxymethylated intermediates. SUNCHEM supplies SMCA in 25 kg bags with a batch COA on every shipment.
CAS 3926-62-3 · ClCH₂COONa · Sodium monochloroacetate
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
SMCA carries the same reactive –CH₂Cl group as monochloroacetic acid, already neutralized as the sodium salt. Charging the salt avoids the heat and extra water of neutralizing MCA in the reactor, which is why it is the usual feed for cocamidopropyl betaine and other amphoteric surfactants, and an option for CMC and carboxymethyl starch.
Buyers usually check assay, moisture, sodium chloride and the pH of a solution: together they decide the salt load and the residual chloroacetate in the finished product.
Standard feed for betaines
Quaternizing fatty amidoamines and tertiary amines with SMCA is the established route to cocamidopropyl betaine and lauryl betaine.
Quoted against your limits
Send your incoming-inspection sheet — assay, moisture, NaCl, pH — and we quote against it, with a batch COA for every lot.
Technical specifications
| Parameter | Typical value |
|---|---|
| Product name | Sodium Chloroacetate (SMCA) |
| Synonyms | Sodium monochloroacetate; sodium 2-chloroacetate |
| CAS No. | 3926-62-3 |
| EC No. | 223-498-3 |
| Molecular formula | C₂H₂ClNaO₂ |
| Molecular weight | 116.48 |
| Appearance | White to off-white powder |
Assay, moisture, sodium chloride and pH limits depend on the producer grade and are stated on the TDS and batch COA; the limits for your order are confirmed in the quotation and contract.
Applications by Industry
Where SMCA is used, and what to confirm before you switch supply.
Betaine & amphoteric surfactants
Reacted with fatty amidoamines such as cocamidopropyl dimethylamine, or with alkyl dimethylamines, to make cocamidopropyl betaine (CAPB), lauryl betaine and related amphoterics for shampoos, body wash and detergents.
Check before trial
- Target active content and residual SMCA limit
- Chloride and color targets for the finished betaine
- Batch size and monthly volume
CMC & carboxymethyl starch
Used as the etherifying agent for carboxymethyl cellulose and carboxymethyl starch where the plant doses the sodium salt instead of MCA.
Check before trial
- Degree of substitution target
- Salt and by-product limits in the finished ether
- Bag size that suits your charging system
Agrochemical, pharma & dye intermediates
A carboxymethylating agent for phenols, amines and thiols in pesticide, pharmaceutical and dye-intermediate synthesis, and in other industrial processes.
Check before trial
- Assay and moisture limits for your synthesis
- Documents your QA team needs
- Sample size for a lab or pilot run
Selection & comparison
SMCA or MCA?
| Your requirement | What usually works |
|---|---|
| Betaine or CMC plant that neutralizes MCA today | SMCA — charge the salt directly |
| Process that needs the free acid | Monochloroacetic acid (MCA) |
| Low residual chloroacetate in the finished product | Agree assay and moisture limits, and check stoichiometry in a trial |
| Replacing an existing supplier | Send your current TDS or COA; we quote against the parameters you approve |
SMCA vs monochloroacetic acid
Swipe or scroll horizontally to see all columns →
| Product | CAS | Formula | Mol. weight | When to choose |
|---|---|---|---|---|
| SMCA | 3926-62-3 | C₂H₂ClNaO₂ | 116.48 | Pre-neutralized; common in betaine and CMC plants that dose the salt |
| MCA | 79-11-8 | C₂H₃ClO₂ | 94.50 | Acid form; most CMC, herbicide and pharma routes |
Both deliver the same –CH₂COOH group. Choose by how your process is set up, and confirm with a trial.
Packaging & storage
Packaging
25 kg bags. Tell us your pallet pattern and labeling requirements with the order.
Storage
Keep bags closed in a cool, dry place; SMCA takes up moisture. Store away from strong acids and oxidizers and follow the SDS for handling.
Transport
Classified as toxic for transport (UN 2659, Class 6.1, PG III); it ships with dangerous-goods documents.
From first email to approved supply
Name the downstream product
Betaine, CMC or an intermediate: each sets different limits for assay, moisture and chloride. Tell us which one and the grade you make.
Compare the numbers that matter
Put assay, moisture, NaCl and solution pH on the same COA template as your incoming inspection, so offers are compared like for like.
Plan for dangerous goods
SMCA ships as UN 2659, Class 6.1. Agree packaging, labeling and the destination port early so the booking does not delay the first order.
Trial, then lock the spec
Run a sample in your own process and keep the approved lot COA as the reference for contract limits.
Tell us your requirement. We match the grade.
Tell us what you make with SMCA, the quantity and the destination port. Add your current specification and we will quote against it.
| Information | Example |
|---|---|
| Application | Betaine, CMC, intermediate |
| Required specification | Assay, moisture, NaCl, pH |
| Packaging | 25 kg bags |
| Quantity | Trial order / monthly / annual volume |
| Destination | Country and port |
| Documents needed | COA, SDS, TDS, REACH statement |
Related products
Cocamidopropyl Betaine
The main betaine made from SMCA, for personal care and detergents.
View product →Dodecyl Dimethyl Betaine
Lauryl betaine, made from dodecyl dimethylamine and chloroacetate.
View product →Sodium Chloroacetate (SMCA) FAQ
What is sodium chloroacetate used for?
Mainly to make betaine surfactants such as cocamidopropyl betaine, and as the etherifying agent for CMC and carboxymethyl starch. It is also used in pesticide, pharmaceutical and dye-intermediate synthesis.
What is the difference between SMCA and MCA?
SMCA is the sodium salt of monochloroacetic acid. It supplies the same reactive group but is already neutralized, so you do not have to add caustic to MCA in the reactor.
How is SMCA packed and shipped?
In 25 kg bags. It is classified as toxic for transport (UN 2659, Class 6.1, PG III) and ships with dangerous-goods documents.
Can I get the TDS and a sample before ordering?
Yes. Send your application and planned test; we provide the TDS and SDS with the quotation and arrange a sample sized for your trial.
