PRODUCTS

THIOCARE C102L

CAS Number: 367‑51‑1 for sodium thioglycolate.
EC Number (EINECS / ELINCS): 206‑696‑4
Substance / Active: Sodium thioglycolate is the main chemical in Thiocare C102L.
Molecular Formula: C₂H₃NaO₂S (for sodium thioglycolate)
Molecular Weight: ~ 114.10 g/mol for sodium thioglycolate.

SYNONYMS:
mercaptoacetic acid monosodium salt, mercaptoacetic acid sodium salt, monosodium mercaptoacetate, sodium 2‑mercaptoethanoate, sodium mercaptoacetate, sodium thioglycollate, thioglycolate sodium, thioglycolic acid sodium salt, thioglycollic acid sodium salt

Thiocare C102L is a high‑performance industrial cleaner based on sodium thioglycolate (~46% solution), designed for metal surface cleaning via reducing and chelation of metal oxides.
Thiocare C102L is a commercial cleaning / metal‑oxide‑removal agent made by Bruno Bock (Thiochem).

According to the supplier, Thiocare C102L is a liquid solution that contains approximately 46 wt% sodium thioglycolate in water.
The “L” likely refers to the liquid concentrate.
Thiocare C102L is used because of the reducing power of the thioglycolate ion (from the thiol group) and its capacity to form stable complexes with metals, especially iron, which makes it effective at removing rust or metal oxides from surfaces.

Thiocare C products (the "C‑line") are known for being nearly pH neutral (compared to strongly acidic cleaners) and yet still very active, which improves operator safety.
Thiocare C102L is a clear, nearly colourless to a red-violet solution with a characteristic odour, consisting of appr. 46 %w/w Sodium Thioglycolate and appr. 54 %w/w water.

USES and APPLICATIONS of THIOCARE C102L:
Thiocare C102L is a clear, nearly colourless to a red-violet solution with a characteristic odour, consisting of appr. 46 %w/w Sodium Thioglycolate and appr. 54 %w/w water.
Thiocare C102L is used mainly as a cleaner.

On one side the reducing properties of the Thioglycolid Acid or the Thioglycolate and on the other hand the capability to form metal-thioglycolate complexes, especially with iron are responsible for the excellent performance in the cleaning of metal surfaces and other applications.

Thiocare C102L's benefits include strong performance at near‑neutral pH (improved operator safety) and ability to remove rust/iron contamination.
Thiocare C102L has well‑documented reducing/chelating behaviour, good water solubility, and is used in a wide variety of industrial contexts.

Thiocare C102L is primarily used in industrial cleaning/metal treatment: Cleaners for removal of metal oxides, rust and heavy‐metal contaminants on substrates, automotive cleaning, leather/textile pretreatment, specialty industrial cleaning.
Thiocare C102L has “high performance cleaning agents that effectively remove rust on various substrates… derived from thioglycolic or thiolactic acid but possess almost neutral pH values.”

As the underlying active chemical, Thiocare C102L has other uses (though not necessarily under the product name): cosmetic hair‐straightening/depyliation (via breaking disulfide bonds in keratin), bacteriological media (thioglycolate medium for anaerobic bacteria), analytical reagent, fine chemical intermediate.

Thiocare C102L is an industrial cleaning/metal‑surface treatment product (from manufacturer Bruno Bock Holding GmbH & Co. KG / Thiochem) based on sodium thioglycolate.
Thiocare C102L belongs to the “Thiocare C” brand family of neutral pH reactive cleaning agents derived from thioglycolic or thiolactic acid.

Thiocare C102L is designed for removal of metal oxides, rust, iron particles etc on sensitive surfaces by utilising the reducing power of the thioglycolate and its ability to form metal–thioglycolate complexes (especially with iron).
Thiocare C102L is used mainly as a cleaner… the reducing properties of the thioglycolate … capability to form metal‑thioglycolate complexes, especially with iron are responsible for the excellent performance in the cleaning of metal surfaces and other applications.”

Application of Thiocare C102L: Bath & Toilet Cleaner, Institutional Cleaner.
Thiocare C102L is used mainly as a cleaner.

Main use: Thiocare C102L is used cleaner for metal surfaces — removes rust, oxide layers, or other metal contaminations by reducing metal oxides and forming soluble complexes.

Metal-Complexing: Because thioglycolate forms stable complexes with metals, particularly iron, Thiocare C102L helps dissolve or lift off oxide or scale layers.
Less aggressive pH: The near-neutral pH formulation (vs strongly acidic cleaners) reduces risk to operators and possibly to substrate materials.
Indicator function: Thiocare C102L includes a built-in indicator so you can visually monitor cleaning progress.

FUNCTION of THIOCARE C102L:
*Solvent

FUNCTION / BENEFITS / MODE OF ACTION of THIOCARE C102L:
The mercapto (–SH) group gives strong reducing capability.
In cleaning, this means Thiocare C102L can reduce metal oxides (for example Fe³⁺/Fe²⁺) or dissolve rust and form soluble complexes.
The thioglycolate anion forms stable coloured complexes with heavy metal ions (especially iron) enabling removal of surface iron oxide films.

Thiocare C102L being neutral to near‐neutral pH (within the Thiocare C line), improves operator safety relative to strong acids/alkalis while retaining cleaning power.
For Thiocare C102L formulation (46% solution) the advantages include ready‐to‐use liquid form, reproducible composition, good compatibility and performance in industrial cleaning/metal pretreatment formulations.

CHARACTERISTICS & FURTHER PROPERTIES of THIOCARE C102L:
Because of the strong reducing and chelating nature, Thiocare C102L may undergo oxidation (the thiol/mercapto group can oxidise to disulfide, e.g., dithiodiglycolate) especially in presence of oxygen, elevated temperature or high pH.
Due to high salt concentration, Thiocare C102L tends to crystallise below 10 °C.

The main reason for the decrease in content in sealed polyethylene containers is the oxidation to dithiodiglycolate due to oxygen permeation.
Storage at temperature higher than 25 °C will accelerate this process.”
In the microbiology SDS, Thiocare C102L states that the substance is readily biodegradable, does not meet PBT/vPvB criteria.

Thiocare C102L’s reducing nature makes it susceptible to degrade or change on storage if conditions are not ideal (e.g., too warm, too much oxygen ingress).
Because Thiocare C102L is an aqueous solution (~46%), handling is simpler than a pure solid salt; yet one must monitor for crystallisation at low temperatures, etc.

Colour variation (clear to red‑violet) may indicate iron complex formation or varying metal contamination, which is inherent in Thiocare C102L's function (forming metal‑thioglycolate complexes) but may affect appearance.

USAGE GUIDANCE of THIOCARE C102L:
When Thiocare C102L is used as a cleaner for metal surfaces: follow manufacturer’s instructions for dilution/concentration, contact time, rinsing, compatibility with substrate, passivation afterwards if necessary.

Because the thioglycolate forms complexes with metal ions and can reduce oxides, Thiocare C102L may affect sensitive metal, alloy or coated surfaces — test on a small area.
Ensure rinsing of residual chemical if surfaces will be exposed to subsequent processes (e.g., painting, plating, etc.).

Monitor storage stability: as noted, Thiocare C102L may crystallise at low temperatures or degrade via oxidation; verify visual appearance/pH/content before use.
Maintain safe handling environment: use Thiocare C102L appropriate containers, avoid contamination with oxidisers, heavy metals present in solution may catalyse unwanted processes.

PHYSICAL and CHEMICAL PROPERTIES of THIOCARE C102L:
Appearance (of the C102L solution): Clear, nearly colorless to red-violet liquid, with a characteristic odor.
Solubility: As a salt in water, sodium thioglycolate is very soluble in water (as evidenced by its use in aqueous solutions).
Reducing Ability: Thioglycolate (–SH) groups are good reducing agents; they can reduce metal oxides and form metal-thioglycolate complexes, which is central to its cleaning action.
Stability / pH: The "C" series of Thiocare is designed to have nearly neutral pH, which minimizes corrosion to non-metal surfaces and improves safety for users.
CAS Number: 367‑51‑1 for sodium thioglycolate.

EC Number (EINECS / ELINCS): 206‑696‑4
Substance / Active: Sodium thioglycolate is the main chemical in Thiocare C102L.
Molecular Formula: C₂H₃NaO₂S (for sodium thioglycolate)
Molecular Weight: ~ 114.10 g/mol for sodium thioglycolate.
Active chemical: Sodium thioglycolate — CAS 367‑51‑1.
EC (EINECS) number: 206‑696‑4.

Product: “Thiocare® C102L 46%” is described as a ~46 % w/w Sodium thioglycolate aqueous solution (approx. 54% water).
Molecular formula: C₂H₃NaO₂S. (Often shown as C₂H₃O₂S·Na)
Molar mass: ~114.1 g mol⁻¹.
Appearance: Hygroscopic crystals/powder (for the pure salt).
Solubility: Soluble in water (e.g., ~200 mg/mL) according to Sigma‑Aldrich data.
Melting/Decomposition: For pure salt, reported melting point > 250 °C (for the “bacteriological grade” salt) or > 300 °C in NTP report.
Partition coefficient (log K_ow): –2.99 at pH 7, 22 °C (according to SDS for microbiology grade) – indicating low lipophilicity.

Density: ~1.288 g/cm³ at 20 °C (for microbiology grade)
The thioglycolate anion is a good reducing agent and forms complexes with metal ions (especially iron) via the mercapto (–SH) functionality.
Typical composition: ~46 % w/w sodium thioglycolate (= “NaTG” on spec sheet) and ~54 % water.
Typical physical form: Liquid. Appearance clear to faint violet.
pH: minimum ≈ 5.5 (as per spec sheet) for the product.
Iron (Fe) content (max) for product: ≤ 20 ppm (photometric).
Storage: In sealed original packaging rated for 6 months at room temperature (max 25 °C).
Crystallisation may occur below ~10 °C due to high salt concentration, though quality remains unaffected.

FIRST AID MEASURES of THIOCARE C102L:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of THIOCARE C102L:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of THIOCARE C102L:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of THIOCARE C102L:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of THIOCARE C102L:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of THIOCARE C102L:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available