The carboxymethylation workhorse
One reagent adds a –CH₂COOH group to cellulose, amines, phenols or thiols, which is why CMC, betaine and herbicide plants are built around it.
MCA
Acide monochloroacétique (MCA) Fournisseur de Chine
Monochloroacetic acid (MCA) is the standard carboxymethylating agent behind CMC, betaine surfactants, thioglycolic acid and phenoxy herbicides. Fournitures SUNCHEM 99.0% min. MCA in 25 kg bags and 1,000 kg de big-bags, avec un COA par lots sur chaque expédition.
CAS 79-11-8 · ClCH₂COOH · Chloroacetic acid
- Lot de COA avec chaque expédition
- Des échantillons pour vos essais
- Support technique pour votre essai
Présentation du produit & avantages clés
MCA has two reactive ends: a carboxylic acid group and an activated C–Cl bond. That makes it the usual way to attach a –CH₂COOH group to cellulose, amidon, amines, phenols and thiols. Most of the world's MCA goes into carboxymethyl cellulose (CMC). The rest feeds amphoteric surfactants, thioglycolic acid, glycine, phenoxy herbicides such as MCPA and 2,4-D, and pharmaceutical and dye intermediates.
In these reactions the by-product acids in MCA matter as much as the assay. Dichloroacetic acid (DCA) and acetic acid carry through into the downstream product, so buyers usually specify them alongside purity and moisture.
Solid grade for batch charging
Bagged MCA is weighed and charged directly, or dissolved on site, without the heated tanks that molten MCA needs.
Specify the impurities, not just purity
We quote against the limits on your incoming-inspection sheet — assay, DCA, acide acétique, moisture — and send the batch COA for each lot.
Spécifications techniques
| Paramètre | Valeur typique |
|---|---|
| Nom du produit | Acide monochloroacétique (MCA) |
| Synonymes | Acide chloroacétique; MCAA |
| Numéro CAS. | 79-11-8 |
| Numéro CE. | 201-178-4 |
| Formule moléculaire | C₂H₃ClO₂ |
| Poids moléculaire | 94.50 |
| Apparence | White to colorless crystalline solid |
| Essai | ≥99,0 % |
Assay is the typical value for our standard grade. Dichloroacetic acid (DCA), acetic acid and moisture limits depend on the producer grade and are stated on the TDS and batch COA; les limites de votre commande sont confirmées dans le devis et le contrat.
Applications par industrie
Where MCA is used, et que confirmer avant de changer d'approvisionnement.
Cellulose & starch ethers — CMC, CMS
The largest single use. Alkali cellulose is etherified with MCA or its sodium salt to make CMC for food, détergent, drilling-fluid and paper grades; starch is carboxymethylated the same way.
Vérifiez avant l'essai
- Target degree of substitution and CMC grade
- Whether you charge MCA or sodium chloroacetate
- DCA and acetic acid limits for your purity target
Amphoteric surfactants & soins personnels
Usually neutralized to sodium chloroacetate first, MCA quaternizes fatty amidoamines to make cocamidopropyl betaine and related betaines. With sodium hydrosulfide it gives thioglycolic acid for cosmetic and PVC-stabilizer uses.
Vérifiez avant l'essai
- Residual chloroacetate limit in your finished product
- Color and chloride targets
- Solid MCA or ready-made sodium salt
Herbicides & intermédiaires agrochimiques
Condensed with chlorophenols to make phenoxy herbicides such as MCPA and 2,4-D, and the source of glycine used in one glyphosate route.
Vérifiez avant l'essai
- Principe actif et voie de synthèse
- Iron or heavy-metal limits, if you specify them
- Monthly volume and delivery rhythm
Pharmaceutique, colorant & fine-chemical intermediates
A building block for glycine, cyanoacetic acid and malonate esters used in caffeine and other APIs, and for dye intermediates such as phenylglycine for indigo.
Vérifiez avant l'essai
- Assay and DCA limits for your synthesis
- Documente les besoins de votre équipe d'assurance qualité (COA, FDS, ATTEINDRE)
- Taille de l'échantillon pour un laboratoire ou une analyse pilote
Sélection & comparaison
Choosing the right MCA form
| Votre exigence | Ce qui fonctionne habituellement |
|---|---|
| CMC, betaine or herbicide production | Standard 99.0% min. solid MCA |
| Your process neutralizes MCA with caustic first | Consider sodium chloroacetate (SMCA) and skip the neutralization step |
| Low by-product acids for pharma or high-purity CMC | Specify DCA and acetic acid limits; ask for the TDS before sampling |
| Charging by weight into batch reactors | Bagged solid — 25 kg bags or 1,000 kg de big-bags |
| Remplacer un fournisseur existant | Envoyez votre TDS ou COA actuel; nous citons en fonction des paramètres que vous approuvez |
MCA vs sodium chloroacetate
Faites glisser ou faites défiler horizontalement pour voir toutes les colonnes →
| Produit | CAS | Formule | Mol. poids | When to choose |
|---|---|---|---|---|
| MCA | 79-11-8 | C₂H₃ClO₂ | 94.50 | Acid form; most CMC, herbicide and pharma routes |
| Chloracétate de sodium (SMCA) | 3926-62-3 | C₂H₂ClNaO₂ | 116.48 | Pre-neutralized; common in betaine and CMC plants that dose the salt |
Both deliver the same –CH₂COOH group. Choose by how your process is set up, and confirm with a trial.
Emballage & stockage
Emballage
25 kg bags or 1,000 kg de big-bags. Tell us your pallet pattern and labeling requirements with the order.
Stockage
Keep bags closed in a cool, sec, ventilated store, away from bases, oxidizers and metals. MCA absorbs moisture and is corrosive; follow the SDS for handling and PPE.
Transport
Solid chloroacetic acid is regulated dangerous goods (ET 1751, Classe 6.1, subsidiary risk 8, PG II). Allow for DG booking and documents when you plan sea freight.
Du premier e-mail à la fourniture approuvée
Name the downstream product
CMC, bétaïne, herbicide or API: each sets different limits for DCA, acetic acid and moisture. Tell us which one and the grade you make.
Comparez les chiffres qui comptent
Assay alone does not qualify MCA. Put DCA, acide acétique, moisture and, if relevant, iron on the same COA template as your incoming inspection.
Plan for dangerous goods
Solid MCA ships as UN 1751, Classe 6.1 (8). D'accord sur l'emballage, labeling and the destination port early so the DG booking does not delay the first order.
Procès, puis verrouillez la spécification
Analysez un échantillon dans votre propre processus et conservez le COA du lot approuvé comme référence pour les limites du contrat..
Dites-nous votre besoin. Nous correspondons à la note.
Tell us what you make with MCA, la quantité et le port de destination. Ajoutez vos spécifications actuelles et nous établirons un devis en fonction de celles-ci.
| Information | Exemple |
|---|---|
| Application | CMC, bétaïne, herbicide, pharma intermediate |
| Spécification requise | Essai, DCA, acide acétique, humidité |
| Formulaire & conditionnement | Solid · 25 kg bags or 1,000 kg de big-bags |
| Quantité | Commande à l'essai / mensuel / volume annuel |
| Destination | Pays et port |
| Documents nécessaires | COA, FDS, DT, Déclaration REACH |
| Current supplier grade | Optional — helps us match |
Produits associés
Chloroacétate de sodium
Pre-neutralized MCA for betaine and CMC processes that dose the sodium salt.
Voir le produit →Carboxyméthylcellulose
The main downstream product of MCA, for food, detergent and industrial grades.
Voir le produit →Cocamidopropyl Bétaïne
Amphoteric surfactant made from a fatty amidoamine and chloroacetate.
Voir le produit →Acide monochloroacétique (MCA) FAQ
What is monochloroacetic acid used for?
Mainly to make carboxymethyl cellulose (CMC). It is also used for betaine surfactants, thioglycolic acid, glycine, phenoxy herbicides such as MCPA and 2,4-D, and pharmaceutical and dye intermediates.
What purity of MCA do you supply?
Our standard grade is 99.0% min. essai. Dichloroacetic acid, acetic acid and moisture limits depend on the producer grade; we send the TDS and batch COA so you can check them against your specification before ordering.
How is MCA packed and shipped?
Dans 25 kg bags or 1,000 kg de big-bags. Solid chloroacetic acid is dangerous goods (ET 1751, Classe 6.1, subsidiary risk 8), so it ships with DG documents; tell us the destination port early.
Should I buy MCA or sodium chloroacetate?
If your process neutralizes MCA with caustic before the reaction, sodium chloroacetate can save that step. Plants that charge the acid directly usually stay with MCA. We can quote both.
Can I get the SDS and a sample before ordering?
Oui. Send your application and planned test; we provide the SDS and TDS with the quotation and arrange a sample sized for your trial.
