磷酸二氢钙

磷酸二氢钙 基本信息
CAS号 7758-23-8 分子式 Ca.2H3O4P
分子量 236.07403 精确质量 　235.91639
PSA 　180.80000 LogP 　-0.98080
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目录
基本信息 制备方法与用途 物化性质 安全信息 毒性 MSDS 结构与计算数据

基本信息 展开↓

CAS号：
7758-23-8
分子式：
Ca.2H3O4P
分子量：
236.07403
中文名称：
磷酸二氢钙
英文名称：
Phosphoric acid, calcium salt (2:1)
中文别名：
磷酸二氢钙;
磷酸一钙;
酸性磷酸钙;
二磷酸四氢钙;
相关CAS：10031-30-8
英文别名：
Phosphoric acid, calcium salt (2:1);
Acid calcium phosphate;
C 38;
C 38 (phosphate);
Calcium biphosphate;
Calcium bis(dihydrogen phosphate);
Calcium bis(orthophosphate);
Calcium dihydrogen orthophosphate;
Calcium dihydrogen phosphate;
Calcium diorthophosphate;
Calcium hydrogen phosphate (Ca(H2PO4)2);
Calcium hydrogen phosphate (CaH4(PO4)2);
Calcium monobasic phosphate;
Calcium orthophosphate monobasic;
Calcium phosphate (1:2);
Calcium phosphate (Ca(H2PO4)2);
Calcium phosphate (CaH4(PO4)2);
Calcium phosphate monobasic;
Calcium phosphate, primary;
Calcium primary phosphate;
Calcium superphosphate;
Calcium tetrahydrogen orthophosphate;
Calcium tetrahydrogen phosphate;
HT Monocalcium Phosphate;
Monobasic calcium phosphate;
Monocalcium dihydrogen phosphate;
Monocalcium orthophosphate;
Monocalcium phosphate;
Monocalcium phosphate (Ca(H2PO4)2);
Monocalcium phosphate [CaH4(PO4)2];
V 90
精确分子量/精确质量：
235.91639
极性分子表面积/PSA：
180.80000
油水分配系数/LogP：

LogP值指的是某物质在正辛醇/水两相体系中的分配系数的对数值，反映了物质在油水两相中的分配情况。其中、LogP值越大，说明该物质越亲油；反之，LogP值越小，则说明该物质越亲水。
贝尔斯坦号/MDL：
MFCD00149602
EINECS：
231-837-1
InChI：
InChI=1/Ca.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+2;;/p-1

生产制备方法及用途展开↓

制备方法

在食品工业中作膨松剂、面团调节剂、缓冲剂、组织改良剂、固化剂、营养增补剂、螯合剂等。

合成制备方法

1.石灰法
用石灰中和食品级磷酸，控制终点为Ph值3.2，即得磷酸二氢钙。
CaCO3+2H3P04→Ca(H2PO4)2+H20+CO2↑
2.磷酸氢钙法
由食品级磷酸氢钙或食品级磷酸三钙与食品级磷酸溶液中和，控制终点为Ph值3.2；再经浓缩、结晶即得产品。
CaHPO4+H3P04→Ca(H2PO4)2

3.采用磷酸氢钙法。将食用磷酸氢钙溶解于食用磷酸中，控制ｐＨ值在3.2左右时生成磷酸二氢钙，经浓缩、冷却结晶、离心分离、干燥，制得食用磷酸二氢钙成品。其反应式如下。

4.将磷酸和氢氧化钙混合，并调节反应液ph值为3.2左右，进行反应：

反应结束后，过滤，滤液经蒸发浓缩，在0℃时冷却结晶，离心甩干，结晶用丙酮充分洗涤后，风干即可。

 

用途简介

用途

1.用作膨松剂、面团调节剂、缓冲剂、营养增补剂、乳化剂、稳定剂等品质改良剂，有提高食品的络合金属离子、pH值、增加离子强度等的作用，可以改善食品的黏着力和持水性。用于面粉、蛋糕、糕点、焙制品、油炸食品、饼干、奶粉、冷饮、冰淇淋等。我国规定，用于面包、饼干、发酵粉，最大使用量4.0g/kg（以磷酸计）；固体饮料8.0g/kg；小麦粉可按生产需要适量使用。

2.广泛用于水产养殖动物及畜禽养殖动物的饲料添加剂。饲料中的添加量一般在1%～2%。

3.在食品工业中用作焙粉发酵剂、酵母养料、钙质的营养增补剂和疏松剂。也可用作饲料添加剂。

4.用作分析试剂，食品和饲料添加剂及塑料添加剂。

物化性质展开↓

外观与性状：
白色结晶粉末
密度：
2.22（16/4℃）
沸点：
158ºC at 760 mmHg
水溶解性：
insoluble
存储条件/存储方法：
库房通风低温干燥
稳定性相关：

1.呈强酸性。100℃时结晶水，200℃时分解。

其它信息：

1.      性状：无色三斜晶系结晶或白色结晶性粉末

2.      密度（g/mL 25ºC）：2.22

3.      相对蒸汽密度（g/mL,空气=1）：未确定

4.      熔点（ºC）：未确定

5.      沸点（ºC，常压）：未确定

6.      沸点（ºC,5.2kPa）：未确定

7.      折射率（n20/D）：未确定

8.      闪点（ºC，）：未确定

9.      比旋光度（º）：未确定

10.   自燃点或引燃温度（ºC）：未确定

11.   蒸气压（kPa,25ºC）：未确定

12.   饱和蒸气压（kPa,60ºC）：未确定

13.   燃烧热（KJ/mol）：未确定

14.   临界温度（ºC）：未确定

15.   临界压力（KPa）：未确定

16.   油水（辛醇/水）分配系数的对数值（25℃）：未确定

17.   爆炸上限（%,V/V）：未确定

18.   爆炸下限（%,V/V）：未确定

19.   溶解性(mg/mL)：易溶于盐酸、硝酸，微溶于冷水，几乎不溶于乙醇，水溶液呈酸性。

安全信息展开↓

海关代码：
2835260000
WGK_Germany：
2
德国有关水污染物质的分类清单
危险类别码：
R36/37/38
安全说明：
S26-S36/37-S37/39
RTECS号：
TB8527000
安全标志：
S26:万一接触眼睛，立即使用大量清水冲洗并送医诊治。
:
:
危险标志：
Xi:Irritant

毒理性展开↓

CHEMICAL IDENTIFICATION

RTECS NUMBER :
TB8527000
CAS REGISTRY NUMBER :
7758-23-8
LAST UPDATED :
199710
DATA ITEMS CITED :
6
MOLECULAR FORMULA :
Ca.2H3-O4-P
MOLECULAR WEIGHT :
236.08

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
17500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 52(12),87,1987
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
15250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 52(12),87,1987 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 84097 No. of Facilities: 661 (estimated) No. of Industries: 11 No. of Occupations: 35 No. of Employees: 14370 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 84097 No. of Facilities: 990 (estimated) No. of Industries: 9 No. of Occupations: 14 No. of Employees: 18990 (estimated) No. of Female Employees: 5892 (estimated)
毒理学数据：

ADI＝0～70mg/kg（以磷计）。面包类用丙酸钙作防腐剂时，面团的ph值上升，使发酵缓慢，此时宜添加本品0.3%，以降低面团的ph值

MSDS 展开↓

Name: Calcium Phosphate Monobasic Material Safety Data Sheet
Synonym: Phosphoric acid calcium sal
CAS: 7758-23-8
Section 1 - Chemical Product   MSDS Name:Calcium Phosphate Monobasic Material Safety Data Sheet
Synonym:Phosphoric acid calcium sal
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
7758-23-8 Calcium Phosphate, Monobasic 100 231-837-1
Hazard Symbols: None Listed.
Risk Phrases: None Listed.
Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Not available.
Potential Health Effects
Eye:
Causes eye irritation. May result in corneal injury.
Skin:
Causes skin irritation.
Ingestion:
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
Dust is irritating to the respiratory tract.
Chronic:
No information found.
Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. Get medical aid if cough or other symptoms appear.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Section 7 - HANDLING and STORAGE
  Handling:
Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 7758-23-8: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Solid
Color: white
Odor: Odorless.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not applicable.
Freezing/Melting Point: 392 deg F
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 392 deg F
Solubility in water: 1.8%
Specific Gravity/Density: 2.22 @18C
Molecular Formula: Ca(HPO4)2
Molecular Weight: 232.0368
Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation.
Incompatibilities with Other Materials:
None reported.
Hazardous Decomposition Products:
Oxides of phosphorus.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 7758-23-8: TB8527000 LD50/LC50:
CAS# 7758-23-8: Oral, mouse: LD50 = 15250 mg/kg; Oral, rat: LD50 = 3986 mg/kg; Skin, rabbit: LD50 = >2 gm/kg.
Carcinogenicity:
Calcium Phosphate, Monobasic - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
 
Section 13 - DISPOSAL CONSIDERATIONS
  Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.
Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 7758-23-8: 0
Canada
CAS# 7758-23-8 is listed on Canada's DSL List.
CAS# 7758-23-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7758-23-8 is listed on the TSCA inventory.

SECTION 16 - ADDITIONAL INFORMATION
N/A

分子结构与计算化学数据展开↓

计算化学数据

1.疏水参数计算参考值（XlogP）:无

2.氢键供体数量:4

3.氢键受体数量:8

4.可旋转化学键数量:0

5.互变异构体数量:无

6.拓扑分子极性表面积161

7.重原子数量:11

8.表面电荷:0

9.复杂度:49.8

10.同位素原子数量:0

11.确定原子立构中心数量:0

12.不确定原子立构中心数量:0

13.确定化学键立构中心数量:0

14.不确定化学键立构中心数量:0

15.共价键单元数量:3

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