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Crystalline Organic Pharmacy Oxalic Acid

  • 144-62-7

  • Industrial

  • C2H2O4

  • 90.034 g/mol

  • 2917111000

  • Oxalic acid

  • Ethanedioic acid; Wood bleach; Crab acid

1. Package information

25kg/plastic woven bags = 1000bags/20fcl = 25mts/20fcl

or as your requirements

*20fcl=20 feet container load

*mts=metric tons

2. Product Summary

Name: Oxalic Acid

Grade: Industrial Grade

Content: 99.6%

2.1 Identifiers


Oxalic Acid


Ethanedioic acid; Wood bleach; Crab acid

Molecular formula


Molecular weight

90.034 g/mol











ECHA InfoCard


EC Number


PubChem CID




UN Code


HS Code


2.2 Physical and chemical properties

Physical State






Odor Threshold

No information available


Ca.1 at 100g/L at 20°C (68°F)

Melting Point/Range

189.5°C (373.1°F) – dec.

Boiling Point/Range

No information available

Flash Point

No information available

Evaporation Rate

No information available

Flammability (solid, gas)

Not applicable

Upper Flammability or explosive limits

Upper explosion limit: 19.9 % (V)

Lower Flammability or explosive limits

Lower explosion limit: 4 % (V)

Vapor Pressure

21.5 hPa at 50°C (122°F) < 0.01 hPa at 25°C (77°F)

Vapor Density

No information available

Relative Density

1.9 g/cm3 at 20 °C (68°F)


Ca.108 g/L at 25°C (77°F)

Partition coefficient (n-octanol/water)

logPow: -1.7 at 23°C (73°F) – Bioaccumulation is not expected

Autoignition Temperature

No information available

Decomposition Temperature

No information available


No information available

2.3 Spectral information

No data available

2.4 Safety and hazards information

2.4.1 Classification of the substance or mixture

GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)

Acute toxicity, Oral (Category 4), H302

Acute toxicity, Dermal (Category 4), H312

Serious eye damage (Category 1), H318

Short-term (acute) aquatic hazard (Category 3), H402

2.4.2 GHS Label elements, including precautionary statements


 Crystalline Organic Pharmacy Oxalic Acid                                                                               

Signal word


Hazard statement(s)


Harmful if swallowed or in contact with skin.


Causes serious eye damage.


Harmful to aquatic life.

Precautionary   statement(s)


Wash skin thoroughly after handling.


Do not eat, drink, or smoke when using this product.


Avoid release to the environment.


Wear protective gloves/ protective clothing/eye protection/ face protection.


IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth.


IF ON SKIN: Wash with plenty of water.

Call a POISON CENTER/doctor if you feel unwell.


IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor.


Wash contaminated clothing before reuse.


Dispose of contents/ container to an approved waste disposal plant.

    2.4.3 Hazards not otherwise classified (HNOC) or not covered by GHS - none

2.5 Stability and reactivity


No data available

Chemical stability

Stable under recommended storage conditions.

Possibility of hazardous reactions

No data available

Conditions to avoid

Avoid moisture.

Incompatible materials

No data available

Hazardous decomposition products

Hazardous decomposition products formed under fire conditions. - Carbon oxides

Other decomposition products - No data available

2.6 Toxicological information

2.6.1 Information on toxicological effects

Acute toxicity

LD50 Oral - Rat - female - 375 mg/kg

Remarks: (ECHA)

Inhalation: No data available

LD50 Dermal - Rabbit - 20,000 mg/kg

Remarks: (Regulation (EC) No 1272/2008, Annex VI) (ECHA)

No data available

Skin corrosion/irritation

Skin - Rabbit

Result: No skin irritation

(OECD Test Guideline 404)

Serious eye damage/eye irritation

Eyes - Rabbit

Result: Risk of serious damage to eyes. - 24 h

(OECD Test Guideline 405) 

Respiratory or skin sensitization

Local lymph node assay (LLNA) - Mouse

Result: negative

(OECD Test Guideline 429)

Germ cell mutagenicity

Mutagenicity (mammal cell test): chromosome aberration.

Chinese hamster lung cells

Result: negative

Ames test

S. typhimurium

Result: negative

In vitro mammalian cell gene mutation test

Chinese hamster lung cells

Result: negative 


IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.

NTP: No component of this product present at levels greater than or equal to 0.1% is identified as a known or anticipated carcinogen by NTP.

OSHA: No component of this product present at levels greater than or equal to 0.1% is on OSHA's list of regulated carcinogens.

Reproductive toxicity

No data available

Specific target organ toxicity - single exposure

No data available

Specific target organ toxicity - repeated exposure

No data available

Aspiration hazard

No data available

Additional Information

Repeated dose toxicity - Rat - male and female - Oral - 90 Days - No observed adverse effect level - 63 mg/kg RTECS: RO2450000

Kidney injury may occur., Contact with eyes can cause: Damage to the eyes. To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.

Stomach - Irregularities - Based on Human Evidence

Stomach - Irregularities - Based on Human Evidence

2.7 Ecological information

2.7.1 Toxicity

Toxicity to fish

Static test LC50 - Leuciscus idus melanotus - 160mg/l - 48h Remarks: (ECHA)

Toxicity to daphnia and another aquatic invertebrate

EC50 - Daphnia magna (Water flea) - 162.2 mg/l - 48 h (OECD Test Guideline 202)

Toxicity to algae

Static test EC50 - Pseudokirchneriella subcapitata (green algae) - 19.83 - 21.35 mg/l - 72 h (OECD Test Guideline 201)

2.7.2 Persistence and degradability


aerobic - Exposure time 20 d

Result: 89 % - Readily biodegradable.

Remarks: (ECHA)

2.7.3 Bioaccumulative potential

No data available 

2.7.4 Mobility in soil

No data available

2.7.5 Results of PBT and vPvB assessment

PBT/vPvB assessment not available as chemical safety assessment not required/not conducted

2.7.6 Other adverse effects

An environmental hazard cannot be excluded in the event of unprofessional handling or disposal.

Harmful to aquatic life - No data available


Crystalline organic pharmacy oxalic acid was first discovered in the extract from the wood sorrel plant. It also occurs naturally in rhubarb, spinach, beet leaves, Swiss chard, chocolate, cabbage, sweet potatoes, peanuts, cranberries, strawberries, and bell peppers. Additionally, several species of aerobic bacteria (Penicillium and Aspergillus), molds, and Lichen excrete oxalic acid as a metabolic product. Synthetically, pharmacy organic oxalic acid can be made from sawdust or by treating carbon monoxide with sodium hydroxide. Up to 25% of organic oxalic acid produced will be used as a mordant in dyeing processes. It is used as a bleach, especially for pulpwood.


Cleaning Agent

Pharmacy oxalic acid is mainly used for the toughest cleaning duties. The acid features such as a bleach-like quality and can be used for things like cleaner crystalline oxalic acid rust remover and stains on the metals and objects. Its utility in rust removal agents is because of it forming a stable, water-soluble salt with ferrioxalate ion and ferric iron. This oxalic acid is found in some quantity in several cleaning products, bleaches, and detergents. Cleaner organic crystalline oxalic acid uses are also ideal for polishing any stone practically and treating old wood.


Industrially Usage

Crystalline oxalic acid is a primary reagent in lanthanide chemistry. Hydrated lanthanide oxalates readily form in very strongly acidic solutions in easily filtered form, a densely crystalline, and as a largely free of contamination by non-lanthanide elements. This oxalate thermal decomposition gives the oxides, a most marketed form of these elements. Oxalic acid applied mostly for mineral processing mechanisms.

Additionally, Oxalic acid can be used to sterilize equipment and people in the textile space use it for bleaching clothes.

Oxalic acid is also sometimes used in the aluminum anodizing process, with or without sulfuric acid. Compared to the sulfuric acid anodizing, the coatings obtained are thinner and exhibit a lower surface roughness.


Pharmaceutical Usage

The companies of the medical field make the most of this acid to further purify certain chemicals or to dilute them. However, there is a very fewer amount of data on the health benefits of this acid. Pharmacy crystalline oxalic acid in raw and organic form is non-lethal. But sometimes it can cause harmful effects on the body as well.



Also, this chemical is used in addition to the chemical for bleaching, removing the stain, Oxalic acid is used mostly as a reducing element in developing photographic films. It is also used in wastewater treatment where this acid removes’ calcium deposits effectively from water. The oxalic acid rust removal is a process to remove the rust on the products like iron.

Product Specification

Please click Contact Us or Email directly to info@hiseachem.com to get the latest specification.

Our services

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Qingdao Hisea Chem is a company that focus on delivery reliable and high-quality products. Our analytical laboratory equipped with advanced apparatus as well as a professional chemist team that ensure our product meet your criteria. After you confirmed your order, we make sure your goods will be delivered with the corresponding certificate of analysis (CoA). For more details of our product CoA, Check Products or talk to one of our sale representative

Quotation & Payment

Qingdao Hisea Chem offer competitive price to our customer. We offer Free on Board (FOB), Cost, Insurance, and Freight (CIF) price to your designated port. Payment options is flexible with Hisea chem, our company have gained great confidence with difference banks all around the world. Email us if you have questions about our quotation and payment policy. 

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After over 20 years on global trade, Qingdao Hisea Chem has formed a mature international trade logistics chain. For most of our products, we offer “door to door service”, our professional team gives you this “one-stop” service to save your time and increase your purchase experience.


Q: What's your advantage? Why choose you?

A: More than 10 years experienced of production chemical production. We have the most professional techniques and team. Great production capacity Sustainable Supply. According to customer requirements, we support the customized.


Q: What's the payment?

 A: T/T would be better with quick transfer and few bank. LC could also be accept, but the proceure is complex and the fee is high. You can also use Western Union. For large quantity, sea shipping can be provided.


Q: Are you a factory or trading company?

 A: We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.


Q: How can i get some samples?

 A: We are honored to offer you samples. New clients are expected to pay for the courier cost,the samples are free for you.


Q: When can i get the price?

 A: We usually quote within 24 hours after we get your inquiry. If you are urgent to get the price, Please tell us in your email so that we will regard your inquiry priority.


Q: Where is your factory located?

 A: Our factory is located in Qingdao,China.


Q: What is your sample policy?

 A: Some of our samples are available for free,while others are available at a cost.

About us

Crystalline Organic Pharmacy Oxalic Acid

Crystalline Organic Pharmacy Oxalic Acid

Crystalline Organic Pharmacy Oxalic Acid

Crystalline Organic Pharmacy Oxalic Acid




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