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citric acid anhydrous
** hydrogen citrate ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for citric acid anhydrous

Description: A naturally occuring acid substance that is used as a disinfectant and fungicide and also used in some pesticide formulations as an acidity regulator

Example pests controlled: -

Example applications: -

Appearance and life cycle: -

Availability status: Current

Introduction & key dates: -

Taxonomic classification: -

EC Regulation 1107/2009 (repealing 91/414):
Status Not listed/not regulated
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also used in: USA

Known to used in the following countries: -

General status: Click here for further information on the general chemical status information used on this site
Biopesticide type Fungicide, Microbiocide, Other substance
Other constituent type Acidity regulator
Substance group Plant derived
Minimum active substance purity -
Known relevant impurities -
Substance origin Natural
Mode of action Unclear mode of action
Substance source A component of all citrus fruit
Substance production Extracted from citrus fruit for use in organic farming also manufactured
Uses Crop protection
Target pests Wide range of insects including ants, aphids, beetles, mealybugs and mites
Target host Vegetables, fruit trees and ornamentals
Farming system suitability Suitable for use in organic farming and for IPM where approved for use in that country
CAS RN 77-92-9
EC number 201-069-1
CIPAC number -
US EPA chemical code 021801
Chiral molecule No
Chemical formula C6H8O7
SMILES C(CC(O)=O)(CC(O)=O)(C(O)=O)O
International Chemical Identifier key (InChIKey) KRKNYBCHXYNGOX-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
Structure diagram/image available? Yes
Molecular mass (g mol-1) 192.12
PIN (Preferred Identification Name) -
IUPAC name 2-hydroxypropane-1,2,3-tricarboxylic acid
CAS name 3-hydroxypentanedioic acid-3-carboxylic acid
Other status information -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White crystalline solid
Related substances & organisms -

Formulations:
Property Click here for information on the general product and branding information used on this site Product Manufacturer
Example products Citric acid T.J. Baker
Sharpshooter St. Gabriel
Formulation and application details Usually supplied as an aqueous concentrate.


ENVIRONMENTAL FATE

for citric acid anhydrous

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 1330000 Q3 High
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) 153 V3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 2.29 X 10-02 Calculated -
Log P -1.64 V3 Low
Bulk density (g ml-1)/Specific gravity 1.665 Q3 -
Dissociation constant (pKa) at 25oC 3.15 Q3 -
Note: Weak acid, pKa(2) = 4.77, pKa(3) = 6.40
Vapour pressure at 25oC (mPa) 2.21 X 10-06 CA2 - Estimated Intermediate state
Henry's law constant at 25oC (Pa m3 mol-1) 4.36 X 10-09 CA2 - Estimated Non-volatile
Henry's law constant at 20oC (dimensionless) 1.31 X 10-16 Calculated Non-volatile
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
Soil degradation (days) (aerobic) DT50 (typical) 20 R2 Non-persistent
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note DT50 1-42 days in sludge (R2)
Plant matrix DT50 (days) Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - CA2 Very mobile
Koc 3.1
Notes and range Estimated
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for citric acid anhydrous

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) - - -
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 3000 V3 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) - - -
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 864 E3 Carassius auratus Low
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 120 E3 Daphnia magna Low
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 640 E3 Scenedesmus quadricauda Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) - - -
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) - - -
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for citric acid anhydrous

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class Low (class I) - -
Mammals - Acute oral LD50 (mg kg-1) > 3000 V3 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) - - -
Mammals - Inhalation LC50 (mg l-1) - - -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

General human health issues May cause gastrointestinal irritation with nausea, vomiting and diarrhea at high doses

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data found

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes Prevent generation of dusts
CLP classification 2013 -
EC Risk Classification Click here to view information omn the EU risk phrases Xi - Irritant: R36/37/38
N - Dangerous for the environment: R53
EC Safety Classification Click here to view information omn the EU safety phrases S26, S37/39
WHO Classification NL - Not listed
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for citric acid anhydrous

Language Name
English citric acid anhydrous
French acide citrique
German -
Danish -
Italian -
Spanish -
Greek -
Slovenian -
Polish -
Swedish -
Hungarian -
Dutch -

Record last updated: Tuesday 17 November 2015
Contact: aeru@herts.ac.uk