Citric acid monohydrate occurs as colourless crystals or as white, crystalline powder with a strongly acidic taste. Citric acid occurs in a variety of fruits and vegetables, most notably citrus fruits. Lemons and limes have particularly high concentrations of the acid;
It is efflorescent in dry air, very soluble in water, freely soluble in ethanol and sparingly soluble in ether. Citric acid monohydrate is non-toxic and has a low reactivity
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Product name |
citric acid monohydrate |
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cas no. |
5949-29-1 |
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Einecs No. |
201-069-1 |
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item |
unit |
international standard |
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BP2014 |
USP37 |
E330 |
FCC8 |
GB1886.231-2016 |
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chracters |
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colorless crystals or granulars, with crystalline powders |
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identification |
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pass test |
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clarity & color |
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pass test |
pass test |
/ |
/ |
/ |
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assay |
% |
99.5.-100.5 |
99.5-100.5 |
≥ 99.5 |
99.5-100.5 |
99.5-100.5 |
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moisture |
% |
7.5-9.0 |
7.5-9.0 |
≤8.8 |
≤8.8 |
7.5-9.9.0 |
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readily carbonisable |
% |
not exceeding standard |
≤ 1.0 |
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sulphate ash |
% |
≤ 0.1 |
≤ 0.1 |
≤ 0.05 |
≤ 0.05 |
≤ 0.05 |
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sulphate |
ppm |
≤ 150 |
≤ 150 |
/ |
/ |
≤ 150 |
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chloride |
ppm |
/ |
/ |
/ |
/ |
≤ 50 |
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oxalate |
ppm |
≤ 360 |
≤ 360 |
≤ 100 |
pass test |
≤ 100 |
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calcium |
ppm |
/ |
/ |
≤ 75 |
/ |
≤ 200 |
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aluminum |
ppm |
≤ 0.2 |
≤ 0.2 |
/ |
/ |
/ |
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arsenic |
ppm |
/ |
/ |
≤ 1 |
/ |
≤ 1 |
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Lead |
ppm |
/ |
/ |
≤ 0.5 |
≤ 0.5 |
≤ 0.5 |
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mercury |
ppm |
/ |
/ |
≤ 1 |
/ |
/ |
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heavy metabls |
ppm |
≤ 10 |
≤ 10 |
≤ 5 |
/ |
/ |
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bacterial endotoxins |
iu/mg |
≤ 0.5 |
paas test |
/ |
/ |
/ |
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| Product Name: | 2-Hydroxy-1,2,3-propanetricarboxylic acid hydrate (1:1) | Other Name: | 1,2,3-Propanetricarboxylic acid,2-hydroxy-,hydrate (1:1);Citric acid,monohydrate;1,2,3-Propanetricarboxylic acid,2-hydroxy-,monohydrate;2-Hydroxy-1,2,3-propanetricarboxylic acid hydrate (1:1);2-Hydroxy-1,2,3-propanetricarboxylic acid monohydrate;Citronsyra Mono E 33-8-80MLT |
| CAS No.: | 5949-29-1 | Molecular Formula: | C6H8O7.H2O |
| InChIKeys: | InChIKey=YASYEJJMZJALEJ-UHFFFAOYSA-N | Molecular Weight: | 210.13900 |
| Exact Mass: | 210.03800 | EC Number: | 611-842-9 |
| UNII: | 2968PHW8QP | ICSC Number: | 0704 |
| DSSTox ID: | DTXSID7074668 | NCI Thesaurus Code: | C47452 |
| HScode: | 2918140000 | Categories: | Acidity Regulators |
| PSA: | 141.36000 | XLogP3: | -1.3128 |
| Appearance: | White crystals or powder | Density: | 3″>1.5 g/cm3 |
| Melting Point: | 135 °C | Boiling Point: | 56 °C760 mm Hg(lit.) |
| Flash Point: | 1 °F | Refractive Index: | n20/D 1.359(lit.) |
| Water Solubility: | H2O: 1630 g/L (20 ºC) | Storage Conditions: | Citric acid monohydrate loses water of crystallization in dry air orwhen heated to about 408℃. It is slightly deliquescent in moist air.Dilute aqueous solutions of citric acid may ferment on standing. |
| Vapor Pressure: | 184 mm Hg ( 20 °C) | Vapor Density: | 2 (vs air) |
| Toxicity: | LD50 orally in Rabbit: 3000 mg/kg | Autoignition Temperature: | 1010 °C |
| Physical Dangers: | Dust explosion possible if in powder or granular form, mixed with air. |
Classification of the substance or mixture
Skin irritation, Category 2
GHS label elements, including precautionary statements
| Pictogram(s) |  |
|---|---|
| Signal word |
Warning |
| Hazard statement(s) |
H319 Causes serious eye irritation |
| Precautionary statement(s) | |
| Prevention |
P264 Wash … thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… |
| Response |
P302+P352 IF ON SKIN: Wash with plenty of water/… P321 Specific treatment (see … on this label). P332+P317 If skin irritation occurs: Get medical help. P362+P364 Take off contaminated clothing and wash it before reuse. |
| Storage |
none |
| Disposal |
none |
Other hazards which do not result in classification
no data available
Precautions for safe handling
NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong bases and oxidants.